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BACKGROUND: The Special Supplemental Nutrition Program for Women, Infants, and Children (WIC), a federal nutrition assistance program supporting low-income families, serves half of United States–born infants, most of whom are issued infant formula by age 2 mo. Obesity prevalence is high among children of low-income households, particularly formula-fed children. OBJECTIVES: This study was conducted to determine whether glucose-based lactose-reduced infant formula made with corn syrup solids (CSSF) is associated with increased obesity risk compared with non-CSSFs that are lactose based. DESIGN: WIC administrative data on infant formula issuance and child weights and lengths were collected prospectively in Southern California between 2012 and 2020. Included children stopped breastfeeding by 3 mo, were issued cow’s milk–based formula through 12 mo, and were enrolled through the final year of WIC eligibility at age 4 y ( n = 15,246). CSSF issuance was assessed continuously (range 0–13 mo) and dichotomously (any, none). Poisson and linear risk regression with robust SE estimates generated risk ratios (RRs), risk differences, and CIs for child obesity [BMI for age (in kg/m (2)) ≥95th percentile]. RESULTS: Any CSSF was issued to 23% of children, and 25% were obese at age 4 y. Children with any CSSF issuance had 10% higher obesity risk (RR: 1.10; 95% CI: 1.02, 1.20) than children with no CSSF issuance at age 2 y. Associations remained significant through age 4 y (RR: 1.07; 95% CI: 1.01,1.14), independent of maternal weight status, total formula issued and breastfeeding duration, and were not modified by child race or sex. Obesity risk increased with additional mo of CSSF exposure, reaching 16% higher risk (RR: 1.16; 95% CI: 1.05, 1.28) at age 2 y for children with 12 mo of CSSF. CONCLUSIONS: CSSF issuance is associated with increased obesity risk in the first 5 y life in a dose dependent manner, independently of maternal weight status, breastfeeding duration, and total formula issuance.

Understanding satisfaction of nutrition education and other services provided in the Special Supplemental Nutrition Program for Women, Infants and Children (WIC) is needed to ensure the program is responsive to the needs of diverse populations. This study examined the variation of WIC participants’ perceptions and satisfaction with WIC nutrition education and services by race, ethnicity, and language preference. Phone surveys were conducted in 2019 with California WIC families with children aged 1–4 years. While most participants (86%) preferred one-on-one nutrition education, online/mobile apps were also favored (69%). The majority (89%) found nutrition education equally important to receiving the WIC food package. Racial/ethnic groups differed in which WIC service they primarily valued as 20% of non-Hispanic White people rated the food package as more important than nutrition education compared to 5% of Spanish- and 6% of English-speaking Hispanic people, respectively. More Spanish (91%) and English-speaking Hispanic people (87%) than non-Hispanic white (79%) or Black people (74%) changed a behavior because of something they learned at WIC (p < 0.001). Spanish-speaking Hispanic people (90%) had the highest satisfaction with WIC nutrition education. Preferential differences among participants suggest that providing flexible options may improve program satisfaction and emphasizes the need for future studies to examine WIC services by race and ethnicity.

Many Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) clinics implemented alternatives to in-person service delivery in response to the COVID-19 pandemic, including virtual visits and electronic document sharing. The objective of this cross-sectional study was to describe WIC participants' experiences with remote service delivery and recertification during the pandemic. Participants included mothers and infants who participated in a WIC-based intervention between June 2019-August 2020. All participants (N = 246) were invited to complete a follow-up survey between November 2020-February 2021; 185 mothers completed the survey. The survey assessed sociodemographics, employment, food security, experiences with remote WIC recertification and service delivery, and experiences with obtaining WIC foods during the pandemic. Average age for mothers was 29.2 ± 6.3 years and for infants was 17.7 ± .2 months; 80% (n = 147) identified as Hispanic. Approximately 34% (n = 62) of participants reported very low or low food security and 40% (n = 64) had difficulties buying WIC foods during the pandemic. Among participants who recalled providing documentation of income and address virtually, the majority felt comfortable providing information via email (60%) and text messaging (72%). Participants reported high levels of satisfaction with remote methods of service delivery, as well as overall satisfaction with the WIC program during the pandemic. While ~ 25% of study participants preferred for all WIC services to remain remote, 75% still desired at least some in-person contact with WIC staff after the pandemic. In conclusion, remote methods of WIC service delivery addressed existing barriers to WIC participation and were well-received by study participants.

The United States Department of Agriculture approved an increase to the Cash Value Benefit (CVB) for the purchase of fruits and vegetables issued to participants receiving an eligible Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) food package. In order to understand satisfaction, perceptions, and the overall impact of additional benefits for fruits and vegetables at the household level, a qualitative study consisting of structured phone interviews was conducted with families served by WIC in Southern California from November to December 2021 (n = 30). Families were selected from a large longitudinal study sample (N = 2784); the sample was restricted by benefit redemption and stratified by language and race. WIC participants were highly satisfied with the CVB increase, reporting increased purchasing and consumption of a variety of fruits and vegetables. Respondents noted the improved quality and variety of fruits and vegetables purchased due to the increased amount. Findings are expected to inform policy makers to adjust the CVB offered in the WIC food package with the potential to improve participant satisfaction and increase participation and retention of eligible families with benefits from healthy diets supported by WIC.

The Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) provides supplemental healthy foods and nutrition education to children under age 5 y in low-income households.We aimed to identify characteristics associated with duration of WIC participation and assess how participation duration relates to household food insecurity (HFI), child diet quality, and child weight status at age 60 mo.This analysis of the WIC Infant and Toddler Feeding Practices Study-2, a prospective cohort of WIC-participating children enrolled in 2013, included children with complete baseline-60 mo data (n = 836). Outcomes assessed with WIC participation duration in multivariable regression were HFI (USDA 6-item Household Food Security Screener), child diet quality on a given day [Healthy Eating Index (HEI)-2015], and obesity (CDC BMI-for-age ≥95th percentile).Factors associated with longer WIC participation included male sex; lower household income; reported diet changes in response to WIC nutrition education; household Supplemental Nutrition Assistance Program participation; English-speaking Hispanic, Spanish-speaking Hispanic, and non-Hispanic other maternal race-ethnicity and language preference; an ever-married mother; lower maternal education; higher maternal age; earlier enrollment during pregnancy; and reporting a subsequent pregnancy. Longer WIC participation was associated with lower HFI odds (OR: 0.69; 95% CI: 0.51, 0.95), higher total HEI-2015 (β: 0.73; 95% CI: 0.20, 1.25), and higher obesity odds (OR: 1.20; 95% CI: 1.05, 1.37) in multivariable-adjusted regression models.Longer WIC participation was associated with reduced HFI and higher diet quality, and unexpectedly with higher obesity odds, at 60 mo. Further research is needed to confirm and understand mechanisms underlying the unexpected associations identified with longer WIC participation (e.g., male sex, obesity). Groups with shorter participation durations may benefit from targeted WIC retention efforts to maximize nutrition security.

Objective:To determine whether a previously reported association between the Special Supplemental Nutrition Program for Women, Infants and Children (WIC) food package change and reduced child obesity risk among WIC-participating children in Los Angeles County holds across levels of family income and neighbourhood poverty.Design:Analysis of prospectively collected WIC administrative data. The outcome was obesity at age 4 years (BMI-for-age ≥ 95th percentile). Poisson regression was applied to a matched sample (n 79 502) to determine if the association between the WIC food package change and child obesity was modified by family income (100 % but Setting:Los Angeles County, California.Participants:Children who participated in WIC in Los Angeles County between 2003 and 2016; children were grouped as receiving the old WIC food package (2003–2009) or the new WIC food package (2010–2016).Results:Receiving the new WIC food package (i.e., post-2009) was associated with 7–18 % lower obesity risk across all family income categories. Neither family income nor neighbourhood poverty significantly modified the association between the WIC food package and child obesity. However, certain sub-groups seemed to benefit more from the food package change than others. In particular, boys from families with income above poverty but residing in the poorest neighbourhoods experienced the greatest reductions in obesity risk (relative risk = 0·77; 95 % CI 0·66, 0·88).Conclusions:The WIC food package revisions were associated with reduced childhood obesity risk among all WIC-participating families in Los Angeles County, across levels of income eligibility and neighbourhood poverty.

Substantial literature has documented adverse childhood experiences’ (ACEs) link with poor health in childhood and adulthood. Despite many American low-income families spending more than a third of their income toward housing costs, little research has been published about a link between severe housing-cost burden and ACEs. The objective of this study was to examine the association of severe housing-cost burden to the ACEs to which young, low-income children are exposed. Participants were 2–5-year-olds who participated in the Special Supplemental Nutrition Program for Women, Infants and Children (WIC) in Los Angeles County. We used data from the 2017 Los Angeles County WIC Survey, a survey of a random sample of all WIC participants living in Los Angeles County. Separate multiple logistic regression analyses were conducted to examine the association of severe housing-cost burden (very difficult to pay for housing) with the ACEs of financial hardship (household food insecurity, extreme poverty, parent’s unemployment and underemployment), household dysfunction (parent’s poor mental well-being and parent’s separation), housing insecurity (doubled up and residential instability), and parent’s experience with homelessness. Sixteen percent of children lived in severe housing-cost burdened households and 14% experienced at least 4 ACEs. After adjusting for sociodemographic characteristics and social support, severe housing-cost burden was associated with an increase in the odds of each of the ACEs. While further research is needed, findings highlight the need for policymakers to provide resources and support for housing-cost burdened children. Also, service providers should identify ACEs among housing cost-burdened children.

Background We estimated longitudinal trajectories of body mass index (BMI) z-score and percentile, weight for height (WFH) z-score and percentile, and percentage of the 95th BMI percentile (BMIp95) among low-income Hispanic children ages 2–5 years to provide normative data for this population and compare the behavior of different measures. Methods Longitudinal height and weight measurements obtained from 18,072 Hispanic children aged 2–5 years enrolled in the Special Supplemental Nutrition Program for Women, Infants and Children in Los Angeles County were analyzed. Trajectories of adiposity-related measures were estimated using mixed models, stratified by sex and BMI percentile at age 2 years. Results For children in the 5th–85th BMI percentile at age 2 years, all adiposity-related measures rose during ages 2–3.5 years; during ages 3.5–5 years, BMI-based measures increased, BMIp95 decreased, and WFH-based measures were stable. For children exceeding the 85th BMI percentile at age 2 years, measures generally trended downward during ages 2–5 years, except for BMIp95, which had variable trends. Conclusions Adiposity measures changed at different rates as children grew during ages 2–3.5 years compared to ages 3.5–5 years, and different measures displayed different trends. Studies should consider examining multiple measures and focusing on change relative to a comparison group. Impact To address the childhood obesity epidemic, information on normative trajectories of adiposity-related measures in at-risk populations of young children is needed. Longitudinal analysis of data collected from low-income Hispanic children during ages 2–5 years revealed different patterns for different adiposity measures and for ages 2–3.5 years versus 3.5–5 years. Child obesity studies should consider examining multiple adiposity measures and focus on change relative to a comparison group to avoid misinterpreting longitudinal patterns.

Objective To examine factors associated with Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) participation through 2 years of age. Design Longitudinal data from the WIC Infant and Toddler Feeding Practices Study-2. Setting Eighty WIC sites. Participants The WIC Infant and Toddler Feeding Practices Study-2 participants interviewed through 2 years of age (n = 1,250). Main Outcome Measure WIC participation through 2 years of age. Analysis Multivariate logistic regression and odds ratios. Results Infants in households with incomes ≤100% of the federal poverty level (FPL) were more than twice as likely as those with incomes above 100% FPL to continue WIC participation through 2 years (odds ratio = 2.22; 95% confidence interval [CI], 1.34–3.66). The odds of WIC participation through 2 years were 2.84 times higher for infants fully breastfed for 6 months or longer compared with infants breastfed for less than 6 months (95% CI, 1.43–5.66). Infants in households in which caregivers reported they made a change in how they fed their family on the basis of something they learned from WIC had 2.60 higher odds of continued WIC participation than infants in households in which caregivers did not report making a change (95% CI, 1.67–4.07). Conclusions and Implications In addition to lower household income, longer breastfeeding duration and application of WIC nutrition education are important predictors of WIC participation through 2 years of age.

Background Food packages provided by the Special Supplemental Nutrition Program for Women, Infants and Children (WIC) were revised in 2009 to better align them with the Dietary Guidelines for Americans. This study was conducted to evaluate whether the effect of the food package change on childhood obesity varied by the food environment in the neighborhoods where WIC-participating children live. Methods Administrative data from participating children in Los Angeles County, California (2003–2016) were merged with geocoded food vendor information by neighborhood of residence. Obesity risk at age 4 was compared between children receiving old (2003–2009) and new (2010–2016) WIC food packages using sex-stratified Poisson regression models, with interaction terms between WIC package and neighborhood density (number per square mile) of healthy and unhealthy food outlets. Results The new food package was associated with a significant decrease in obesity risk. Among boys, the new food package was associated with 8 to 18% lower obesity risk at all healthy and unhealthy food outlet densities, and the association was not modified by neighborhood food outlet density. Among girls, the association of the new food package with obesity risk was protective in neighborhoods with high healthy and low unhealthy food outlet densities, and adverse in neighborhoods with high unhealthy and low healthy food outlet densities. The effect of the new food package among girls was modified by unhealthy food outlet density, with significantly smaller (p-value = 0.004) decreases in obesity risk observed in neighborhoods with higher unhealthy food outlet density. Conclusions The impact of the food package change was modified by the neighborhood food environment among girls only. Future policy changes should incorporate consideration of ways to mitigate potentially inequitable geographic distribution of the health benefits of policy changes.

Background The Special Supplemental Nutrition Program for Women, Infants and Children (WIC) changed the food packages provided to its participants in 2009, to better align them with the Dietary Guidelines for Americans. Previous research found that the 2009 WIC food package change was associated with reduced obesity risk, particularly among breastfed infants but also among those who were never breastfed. The objective of this study was to determine if the new child food package introduced in 2009, including more produce and whole grains for 1–4-year old children, was associated with healthier growth trajectories and reduced obesity risk at age 4 years among children who were exclusively formula fed during infancy. Methods Administrative data on WIC-participating children in Los Angeles County, 2003–2016, were used (N = 74,871), including repeated measures of weight and length (or height); child’s age, gender, and race/ethnicity; maternal education and language; and family poverty. Gender-stratified spline mixed models were used to examine weight-for-height z-score (WHZ) growth trajectories from 0 to 4 years and Poisson regression models were used to assess obesity (BMI-for-age > 95th percentile) at age 4. The main independent variable was duration of receipt (dose) of the new child package, categorized as 0, > 0 to Results WHZ growth trajectories were similar for children across new child package dose groups. Boys and girls who were fully formula fed during infancy but received the new child food package for 4 years had a 7% (RR = 0.93; 95%CI = 0.89–0.98) and a 6% (RR = 0.94; 95%CI = 0.89–0.99) lower obesity risk, respectively, compared to children who received the new child food package for 0 years. There were no differences in obesity risk for children receiving child package vs. 0 years. Conclusions Providing healthy foods during childhood to children who were exclusively formula fed as infants was associated with modest improvements in obesity outcomes. While breastfeeding promotion should still be prioritized among WIC participants, providing healthy foods during childhood may provide health benefits to formula fed children, who comprise a sizeable proportion of children served by WIC.

This study assessed relationships of duration of family Special Supplemental Nutrition Program for Women, Infants and Children (WIC) participation with racial/ethnic disparities in child sugar-sweetened beverage (SSB) and water intake. Child beverage intake and family duration on WIC were collected during three cross-sectional surveys of WIC-participating families in Los Angeles County, California (2014, 2017 and 2020; n = 11,482). The associations of family duration of WIC participation, a proxy for the amount of WIC services received, with daily intake of total SSBs, fruit-flavored SSBs and water were assessed in race/ethnicity strata with multivariable negative binomial and Poisson regression models. Among English-speaking Hispanic children, those of families reporting 10 years of WIC participation consumed 33% and 27% fewer servings of total and fruit-flavored SSBs compared to those of families reporting 1 year on WIC. Among Black children, those from families reporting 5 and 10 years of participation in WIC consumed 33% and 45% more daily servings of fruit-flavored SSBs than those from families reporting 1 year on WIC. Disparities in daily total and fruit-flavored SSB intake between Black and White children increased with longer family duration on WIC. Duration of family WIC participation is associated with healthier beverage choices for infants and children, but does not appear to be equally beneficial across racial/ethnic groups in Los Angeles County.

Purpose Identify the prevalence and predictors of substantial postpartum weight retention (SPPWR) among WIC mothers in Southern California during their first postpartum year. Design Secondary data analysis. Setting The 2020 Los Angeles County WIC Survey. Subjects Mothers of children up to 1-year-old (N = 1019). Measures Outcome variable: SPPWR (≥5 kg above pre-pregnancy weight). Predictors: child’s age, mother’s age, race, education, employment status since having child, healthcare coverage, food insecurity, depressed mood, instrumental support, emotional support, spouse’s participation in child’s life, gestational weight gain (GWG), pre-pregnancy BMI, any breastfeeding, and gestational diabetes. Analysis Weighted descriptive statistics and binary logistic regression. Results The prevalence of SPPWR was 31%. We found that for every 1 month increase in the child’s age (proxy for postpartum duration), the likelihood of SPPWR increased by 9% (AOR = 1.09, CI = 1.04-1.15). Mothers were more likely to have SPPWR when they exceeded GWG guidelines (AOR = 3.43, CI = 2.46-4.79). Compared to mothers with normal pre-pregnancy BMIs, mothers with overweight (AOR = .64, CI = .44-.94) and obese (AOR = .39, CI = .26-.58) pre-pregnancy BMIs were less likely to experience SPPWR. Conclusion Postpartum duration and maternal anthropometric characteristics were associated with SPPWR during the first postpartum year. Extending WIC eligibility for postpartum mothers to 2 years through the Wise Investment in Children Act may give WIC providers the opportunity to work closely with Southern California WIC mothers to achieve a healthy weight after pregnancy.

BackgroundThe US Department of Agriculture granted waivers to allow flexibility in the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) operations during the coronavirus disease 2019 (COVID-19) pandemic; however, research examining the associations between waiver introduction and changes in perceptions, practices, and challenges of WIC participants' and agency directors' experiences is limited.ObjectiveThe objective of this study was to assess California WIC participants' and agency directors' perceptions and practices of remote WIC services during the COVID-19 pandemic. A secondary aim was to understand other COVID-19 challenges related to maintaining access to healthy foods by WIC participants.DesignA qualitative study that included semistructured interviews was conducted between June 2020 and March2021.Participants and settingOne hundred eighty-two WIC participants with a child aged 0 to 5 years from three regions of California (Southern, Central, and Northern) and 22 local WIC agency directors across the state were interviewed.Main outcome measuresWIC participants' and agency directors' perceptions, practices, and other challenges during COVID-19.Statistical analyses performedInterviews were recorded, transcribed, and analyzed using a grounded theory approach.ResultsParticipants shared that they valued the information received from WIC and were very satisfied with remote WIC services. Participants reported that enrolling in WIC remotely was easier than coming in person. All waivers and changes to WIC operations, namely the physical presence, remote benefit issuance, and separation of duties waivers, and remote work and remote delivery of nutrition education, were largely viewed by WIC agency directors as options that should be continued postpandemic. Further, a majority (63%) of households reported experiencing food insecurity, and half of respondents received food from a food bank or pantry during the pandemic.ConclusionsFindings suggest WIC will attract and retain the most families by offering a hybrid model of services, incorporating both onsite services and remote options to work more efficiently and effectively.

Early in the COVID-19 pandemic, the U.S. Department of Agriculture (USDA), State governments, and school districts took unprecedented steps to mitigate the pandemic’s impact on students’ nutrition. To examine the effect of emergency responses on 6-year-old children’s nutritional outcomes, this study analyzed longitudinal data from a national study of children’s feeding practices, the Special Supplemental Nutrition Program for Women, Infants, and Children—Infant and Toddler Feeding Practices Study-2 (WIC ITFPS-2). Findings include no differences in food insecurity prevalence; however, there were shifts in sources of food, with children in the post-COVID-emergency-declaration (post-ED) group consuming more dietary energy from stores and community food programs and less from restaurants and schools than children in the pre-COVID-emergency-declaration (pre-ED) group (p < 0.01 for all comparisons). Examination of within-person mean differences in 2015 Healthy Eating Index scores and nutrient intakes between ages 5 and 6 years revealed few statistically significant differences between the two groups: children in the post-ED group consumed slightly fewer vegetables (p = 0.02) and less sodium (p = 0.01) than their pre-ED peers. Findings suggest emergency efforts to maintain children’s nutrition were largely successful in the early months of the pandemic. Research is needed to understand the mechanisms by which emergency efforts contributed to these findings.

Background:The Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) provides nutrition assistance to half of infants born in the United States. The nationally representative WIC Infants and Toddler Feeding Practices Study-2 (ITFPS-2) reported a caloric deficit at 7 months among infants receiving WIC mixed feeding packages, suggesting these infants may be at risk for growth deceleration/faltering.Methods:Longitudinal administrative data collected prospectively from WIC participants in Southern California between 2010 and 2019 were used (n= 16,255). Infant lengths and weights were used to calculate weight-for-length (WLZ), weight-for-age (WAZ) and length-for-age (LAZ) z-scores at different time points. Growth deceleration/faltering was determined at 9, 12, 18, and 24 months by the change in z-score from the last measurement taken ≤ 6 months of age. Infant feeding was categorized by the food package (breastfeeding, mixed feeding, and formula feeding) infants received from WIC at 7 months. Poisson regression models were used to evaluate the association between WIC infant package at 7 months and deceleration/faltering at 9, 12, 18, and 24 months.Results:The proportion of infants displaying decelerated/faltering growth was low for all infant food package groups. Receiving the WIC mixed feeding package at 7 months of age was not associated with WLZ, WAZ, and LAZ deceleration/faltering growth.Conclusions:Growth deceleration/faltering rates were very low among WIC participating children in Southern California, highlighting the critical role of nutrition assistance in supporting adequate growth in early childhood.

Affordable housing is necessary for the health and well-being of children and families. The coronavirus disease 2019 (COVID-19) pandemic affected the ability of low-income families to pay for housing. The aim of this study is to evaluate associations between household characteristics of participants of the Special Supplemental Nutrition Program for Women, Infants and Children (WIC), and housing-cost burden during the pandemic. WIC is a federally-funded nutrition assistance program for low-income mothers, infants, and children up to the age of 5. Data were from a 2020 survey of a random sample of WIC households (n = 5815) in Los Angeles County. Ordinal logistic regression determined the odds of being housing-cost burdened by parent respondent’s race/ethnicity, household composition, employment, residence, and housing cost. Logistic regression determined if the pandemic contributed to the housing-cost burden. A total of 61% of households reported housing-cost burden, with two-thirds attributing the burden to the pandemic. Spanish-speaking Hispanic parents and white parents reported a higher prevalence of pandemic-related burden, while Asian, Black, and English-speaking Hispanic parents reported a higher prevalence of burden unrelated to the pandemic. Single-parent households, those experiencing residential instability, and those with high housing costs had higher odds of burden. Spanish-speaking Hispanic parents, white parents, homeowners, and those with high housing costs were more likely to attribute the burden to the pandemic. To ensure that existing inequities are not exacerbated, it is vital that housing assistance be available to low-income households that were disproportionately affected by the pandemic.

There is growing evidence that prenatal participation in the Special Supplemental Nutrition Program for Women, Infants and Children (WIC) reduces the risk of adverse birth outcomes. With recent changes in health care, rising health care costs, and increasing rates of prematurity in the U.S., there is urgency to estimate the potential cost savings associated with prenatal WIC participation. A cost-benefit analysis from a societal perspective with a time horizon over the newborn’s life course for a hypothetical cohort of 500,000 Californian pregnant women was conducted in 2017. A universal coverage, a status quo (‘business as usual’) and a reference scenario (absence of WIC) were compared. Total societal costs, incremental cost savings, return on investment, number of preterm births prevented, and incremental net monetary benefits were reported. WIC resulted in cost-savings of about $349 million and the prevention of 7,575 preterm births and would save more if it were universal. Spending $1 on prenatal WIC resulted in mean savings of $2.48 (range: $1.24 to $6.83). Decreasing prenatal WIC enrollment by 10% would incur additional costs (i.e. loss) of about $45.3 million to treat the resulting 981 preterm babies. In contrast, a 10% increase in prenatal WIC enrollment would prevent 141 preterm births and achieve additional cost-savings of $6.5 million. The findings confirm evaluations from the early 1990s that prenatal WIC participation is cost-saving and cost-effective. Further savings could be achieved if all eligible women were enrolled in WIC. Substantial preterm birth-related costs would result from reductions in WIC participation.

Background: Breastfeeding rates among low-income children participating in the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) lag behind national rates. In L...

Background The Special Supplemental Nutrition Program for Women, Infants and Children (WIC) provides supplemental foods to assist participants in meeting their dietary needs. Few studies have described the extent to which WIC-eligible foods contribute to the overall diet of children who were enrolled in WIC prenatally or in early infancy. Objective Our aims were to examine commonly consumed foods and estimate the proportion of dietary intake contributed by WIC-eligible foods among 13- and 24-month-old children, and to assess differences by WIC participation status at 24-months. Design This was a national observational study. Participants/setting Children participating in the WIC Infant and Toddler Feeding Practices Study-2 were included (13 months old [n=2,777] and 24 months old [n=2,450]) from 2013 to 2016. Main outcome measures Dietary intakes were assessed using 24-hour dietary recalls at 13 and 24 months. The 10 most commonly consumed foods were described using the What We Eat in America food category classification system. WIC-eligible foods were defined as meeting the WIC nutrient criteria set forth in the Federal regulation. Statistical analyses performed The estimated proportion (mean±standard error) of WIC-eligible foods to total daily intake was calculated for energy, macronutrients, and select micronutrients. Multiple linear regression, adjusted for confounders, was conducted to compare the estimated proportion of nutrient intake from WIC-eligible foods by WIC participation at 24 months. Results At 13 and 24 months, most (60% and 63%, respectively) of the commonly consumed foods were eligible for purchase as part of the child WIC food package. WIC-eligible foods provided >40% of calories and close to 50% or more of other nutrients, and the contribution of WIC-eligible foods to overall micronutrient intake increased between 13 and 24 months. Children still on WIC at 24 months obtained a larger proportion of calories and most other nutrients from WIC-eligible foods than children no longer on WIC. Conclusions WIC-eligible foods could contribute to the overall diet of toddlers who were enrolled in WIC prenatally or in early infancy. Further, there may be additional nutritional benefits of staying on the program through 24 months.

To evaluate if children of families with a longer duration of participation in the Special Supplementation Nutrition Program for Women, Infants, and Children (WIC) consume fewer sugar-sweetened beverages (SSB) and more water.A repeated cross-sectional study.Conducted among representative samples of WIC-participating families in Los Angeles County, California, in 2014, 2017, and 2020.Children aged 4-59 months participating in WIC.Daily servings of total SSBs, daily servings of specific types of SSBs, and daily servings of water.Multivariable count regression models were used to estimate incidence rate ratios (IRR) and 95% confidence intervals (CI) for associations of the duration of family WIC participation with daily servings of total SSBs, water, and specific types of SSBs. Zero-inflated negative binomial regression models were used for total SSBs and specific types of SSBs, and Poisson regression was used for water.Children of families with 2 years of WIC participation consumed significantly fewer daily servings of total SSBs (IRR, 0.95; 95% CI, 0.93-0.98; P = 0.002), fruit-flavored SSBs (IRR, 0.95; 95% CI, 0.91-0.99; P = 0.02), soda (IRR, 0.86; 95% CI, 0.76-0.98; P = 0.02), and water (IRR, 0.99; 95% CI, 0.98 to1.00; P = 0.03) than children of families with 1 year of WIC participation. Protective associations for total SSBs, fruit-flavored SSBs, and soda remained statistically significant and increased in magnitude through 10 years of family WIC participation.Duration of WIC participation was associated with decreased SSB intake by young children. Given the role that increasing water intake in lieu of SSBs plays in child obesity, improving the effectiveness of WIC nutrition education on parental perceptions and provision of fruit-flavored SSBs and water to their children merits detailed evaluation.

Compared to other food groups, vegetable intakes are lowest relative to recommendations. Breastfeeding and initial introduction to vegetables may help infants establish long-lasting taste preferences. We examined the relationship between breastfeeding and initial vegetable introduction and vegetable intake in early childhood (ages 13–60 months). This repeated cross-sectional study used data from the national WIC Infant and Toddler Feeding Practices Study-2 collected from low-income mother/caregivers about infants from around birth through age 5 (60 months; n = 3773). Survey-weighted adjusted regression models assessed associations between breastfeeding and vegetable introduction measures with vegetable consumption at child ages 13, 24, 36, 48, and 60 months. Longer breastfeeding duration was associated with a slightly, but significantly, greater variety of vegetables consumed/day in early childhood. There was also a small but positive statistically significant association between the number of different types of vegetables consumed on a given day at 9 months and the amount and variety of vegetables consumed/day in early childhood. Age of initial vegetables introduction and whether vegetables were the first/second food introduced were not consistently related to the amount or variety of vegetables consumed later in childhood. Longer breastfeeding and introduction to a greater variety of vegetables at 9 months may be behaviors to target to increase consumption of a greater variety of vegetables by young children.

Substantial literature has documented adverse childhood experiences' (ACEs) link with poor health in childhood and adulthood. Despite many American low-income families spending more than a third of their income toward housing costs, little research has been published about a link between severe housing-cost burden and ACEs. The objective of this study was to examine the association of severe housing-cost burden to the ACEs to which young, low-income children are exposed.Participants were 2-5-year-olds who participated in the Special Supplemental Nutrition Program for Women, Infants and Children (WIC) in Los Angeles County. We used data from the 2017 Los Angeles County WIC Survey, a survey of a random sample of all WIC participants living in Los Angeles County. Separate multiple logistic regression analyses were conducted to examine the association of severe housing-cost burden (very difficult to pay for housing) with the ACEs of financial hardship (household food insecurity, extreme poverty, parent's unemployment and underemployment), household dysfunction (parent's poor mental well-being and parent's separation), housing insecurity (doubled up and residential instability), and parent's experience with homelessness.Sixteen percent of children lived in severe housing-cost burdened households and 14% experienced at least 4 ACEs. After adjusting for sociodemographic characteristics and social support, severe housing-cost burden was associated with an increase in the odds of each of the ACEs.While further research is needed, findings highlight the need for policymakers to provide resources and support for housing-cost burdened children. Also, service providers should identify ACEs among housing cost-burdened children.

Objective Assess alignment of Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) participant preferences with the National Academies of Sciences, Engineering, and Medicine WIC child food package recommendations and compare differences by race/ethnicity. Methods Cross-sectional examination of survey responses collected between January and May 2019 from 2,993 California WIC families with children aged 1–4 years. Results Over half of WIC participants (56.1%) wanted an increase in the amount allocated for fruits and vegetables. Many WIC participants (69.6%) thought the amount of juice offered by WIC was just right. Overall, the majority (91.0%) wanted to substitute more fruits and vegetables for juice. Most were satisfied with the amount of beans (78.4%), peanut butter (78.7%), and milk (88.3%). Preferences differed by race/ethnicity. Conclusions and Implications Preferences of California WIC participants are highly aligned with the proposed National Academies of Sciences, Engineering, and Medicine changes for increasing fruits and vegetables. Notable differences by race/ethnicity suggest the need for more flexibility.

BACKGROUND The Special Supplemental Nutrition Program for Women, Infants and Children (WIC) provides enough formula to meet the known nutritional needs of infants up to 6 months of age whose mothers report not breastfeeding, but many mothers report WIC providing insufficient formula, indicating potential overfeeding. OBJECTIVE To estimate the prevalence of potential overfeeding among formula-feeding WIC participants and identify associated factors. METHODS Potential overfeeding was identified among participants of the longitudinal Infant and Toddler Feeding Practices Study-2 (ITFPS-2) receiving the fully formula-feeding WIC infant package at 1 month of age (n = 1235, weighted n = 197 079). Associations of potential overfeeding with caloric intake, weight and participant characteristics were assessed. RESULTS Potential overfeeding was identified among 37.41% (95% CI = 33.57-41.25%) of fully formula-feeding infants. Potentially overfed infants were 0.18 kg heavier (P-value = .01), consumed 26 more calories daily (P-value = .004) and were more likely Non-Hispanic White or English-speaking Hispanic (P-value = .007) and highly active at 5 months of age (P-value = .01). Mothers of potentially overfed infants were less likely to agree that breastfeeding is easier than bottle feeding, only mothers can feed breastfed infants, turning away from the bottle indicates satiation, and crying always indicates hunger (P-values .04, .002, .04 and .04 respectively), and more likely to report WIC provides insufficient formula early (1-5 months, P-value

Background Bottle-fed infants are at greater risk for overfeeding and rapid weight gain (RWG); evidence-based strategies for promoting healthy bottle-feeding practices are needed. Objective Our aim was to assess whether policy, systems, and environmental (PSE) strategies for promoting responsive bottle-feeding practices within the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) were associated with lower risk for RWG. Design We conducted a matched-pair cluster randomized trial. PSE strategies were implemented at 3 WIC clinics in Los Angeles County. PSE clinics were compared with 3 matched control clinics. Mothers and infants were assessed when infants were newborn and 3 months and 6 months of age. Participants/setting Participants were mothers (n = 246) who enrolled their newborn infants (younger than 60 days) into WIC between May and August 2019. Main outcome measures Infant weight was assessed and standardized to sex- and age-specific z scores. RWG was defined as weight-for-age z score change > 0.67. Mothers completed questionnaires assessing responsive and pressuring feeding styles, breast- and bottle-feeding patterns, and perceptions of WIC experiences. Statistical analyses performed Logistic regression with estimation via generalized estimating equations and linear mixed models with repeated measures assessed effects of PSE strategies on categorical and continuous outcomes, respectively. Results Infants in PSE clinics had significantly lower likelihood of exhibiting RWG (P = .014) than infants in control clinics. Mothers in PSE and control clinics reported similar levels of responsive and pressuring feeding style and similar prevalence of breastfeeding and bottle-feeding. Mothers in PSE clinics trended toward feeling better supported with respect to their decision to bottle-feed (P = .098) and had more stable intentions to stay in the WIC program (P = .002) compared with mothers in control clinics. Conclusions PSE strategies focused on promoting more inclusive assessment of infant feeding, tailored bottle-feeding counseling, and increased education and support for responsive bottle-feeding were associated with lower risk for RWG among WIC infants.

Despite high rates of housing-cost burden in the United States, little is known regarding its impact on childhood obesity. In this article, we determine whether low-income 2–5-year-olds living in housing-cost burdened households are more likely to be obese and examine the potential moderators and behavioral and psychosocial mediators of this relationship. We used data from a triennial survey (2011, 2014) of a random sample of Los Angeles County participants of the Special Supplemental Nutrition Program for Women, Infants and Children (n = 2307). Logistic regression was used to examine the association between child's obesity status (Body Mass Index for age and sex ≥ 95th percentile) and severe housing-cost burden (finding it very difficult to pay for housing). Mother's depressive symptoms and child's diet and screen time were tested for mediation. We found that 16% of children lived in severe housing-cost burdened households. Severe housing-cost burden was associated with an increase in the odds of childhood obesity [aOR (95%CI) = 1.33 (1.00, 1.78)] and household size moderated this relationship. Child's diet and screen time and mother's depressive symptoms were not mediators. Given the high and vacillating rates of early childhood obesity and the increasing burden of housing costs in low-income populations, there is an urgency to better understand the role of housing-cost burden in epidemiologic investigations of early childhood obesity., Highlights • Children in severe housing-cost burdened households had more chronic stressors. • Severe housing-cost burden was associated with greater odds of childhood obesity. • Child's behavior and mother's mental well-being were not mediators of the relationship.

The recognition of the role of the environment in contributing to the obesity epidemic has led to increasing efforts to address obesity through environmental or place-based approaches in the past decade. This has challenged the use of the quasi-experimental design for evaluating community interventions. The objective of this study is to describe the development of an index of dose of exposure to community interventions that impact early childhood obesity. The goal is to provide an alternative means for evaluating the impact of multiple intervention strategies that target the same community at the same time. Two workgroups developed domains, constructs and protocols for estimating a "community intervention dose index" (CIDI). Information used to develop the protocol came from multiple sources including databases and reports of major funding organizations on obesity-related interventions implemented in Los Angeles County from 2005 to 2015, key informant interviews, and published literature. The workgroups identified five domains relevant to the consideration of dose of exposure to interventions: physical resources, social resources, context, capacity development, and programs and policies; developed a system for classifying programs and policies into macro- and micro-level intervention strategies; and sought ratings of strategy effectiveness from a panel of 13 experts using the Delphi technique, to develop an algorithm for calculating CIDI that considers intervention strength, reach and fidelity. This CIDI can be estimated for each community and used to evaluate the impact of multiple programs that use a myriad of intervention strategies for addressing a defined health outcome.

ObjectiveWhile economic crises can increase socio-economic disparities in health, little is known about the impact of the 2008–09 Great Recession on obesity prevalence among children, especially low-income children. The present study examined whether socio-economic disparities in obesity among children of pre-school age participating in a federal nutrition assistance programme have changed since the recession.DesignA pre–post observational study using administrative data of pre-school-aged programme participants from 2003 to 2014. Logistic regression was used to examine whether the relationship between obesity prevalence (BMI≥95th percentile of the Centers for Disease Control and Prevention’s growth charts) and three measures of socio-economic status (household income, household educational attainment, neighbourhood-level median household income) changed after the recession by examining the interaction between each socio-economic status measure and a 5-year time-period variable (2003–07 v. 2010–14), stratified by child’s age and adjusted for child’s sociodemographic characteristics.SettingLos Angeles County, California, USA.SubjectsChildren aged 2–4 years (n 1 637 788) participating in the Special Supplemental Nutrition Program for Women, Infants, and Children.ResultsThe magnitude of the association of household income and household education with obesity increased after 2008–09 among 3- and 4-year-olds and 2- and 3-year-olds, respectively. However, the magnitude of the association of neighbourhood-level median household income with obesity did not change after 2008–09.ConclusionsDisparities in obesity by household-level socio-economic status widened after the recession, while disparities by neighbourhood-level socio-economic status remained the same. The widening household-level socio-economic disparities suggest that obesity prevention efforts should target the most vulnerable low-income children.

Objectives Household stressors, such as food insecurity, contribute to the home emotional environment and negatively affect child development. Little research on this topic has been conducted among very young children. This study aimed to examine the relationship between food insecurity and the home emotional environment, as well the extent to which the relationship may be mediated by maternal symptoms of depression. Frequency of praise, affection, and discipline of young children by mothers were examined as markers of the home emotional environment. Methods Data were collected in a cross-sectional study of mothers of children under the age of five (N = 4231). Logistic regression was used to assess the relationship between level of food security and frequency of praise and discipline of children. Mediation analysis using the KHB method was conducted to test whether maternal mental health mediated the relationship between food insecurity and each outcome. Results Low and very low food security were significantly associated with higher odds of disciplining children with high frequency. Controlling for all covariates, frequency of praise was not significantly associated with level of household food insecurity. Differences in praise and discipline frequency were found by language of interview, maternal education, and employment. Conclusions for Practice Parent-child interactions, specifically related to discipline, are related to food insecurity. Further research should consider cultural patterns and mechanisms behind the relationship between food insecurity and the home environment. Household stressors begin affecting children at young ages, and early intervention is essential to prevent further negative sequelae as children grow older.

Objectives The present study sought to examine the association between maternal depressive symptoms and characteristics of offspring physical health, including health status, health behaviors, and healthcare utilization, among low-income families. Maternal engagement was explored as a mediator of observed effects. Methods Cross-sectional survey data from a community sample of 4589 low-income women and their preschool-age children participating in the WIC program in Los Angeles County were analyzed using logistic, Poisson, and zero-inflated negative binomial regression. Mediation was tested via conditional process analyses. Results After controlling for the effects of demographic characteristics including maternal health insurance coverage, employment status, education, and preferred language, children of depressed women (N = 1025) were significantly more likely than children of non-depressed women (N = 3564) to receive a "poor" or "fair" maternal rating of general health (OR 2.34), eat fewer vegetables (IRR: 0.94) more sweets (IRR: 1.20) and sugary drinks daily (IRR: 1.32), and consume fast food more often (OR 1.21). These children were also less likely to have health insurance (OR 1.59) and more likely to receive medical care from a public medical clinic or hospital emergency room (OR 1.30). Reduced maternal engagement partially mediated associations between maternal depressive symptoms and several child health outcomes including poor diet, health insurance coverage, and use of public medical services. Conclusions for Practice Maternal depressive symptoms are associated with poor health among preschool-age children in low-income families. Prevention, screening, and treatment efforts aimed at reducing the prevalence of maternal depression may positively affect young children's health.

Background and Purpose: Studies have shown that maternal obesity and excessive gestational weight gain (GWG) lead to adverse health outcomes for the mother and her offspring. Yet, knowledge of the best way to intervene is still lacking. The objective of this study was to develop, pilot and evaluate a sustainable intervention to prevent excessive GWG among participants of the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) in southern California. Methods: We conducted a prospective cohort study where the intervention group received an individual education program that included a GWG tracker. The historical control group was a group of women from the same WIC site who gave birth before the start of the intervention, therefore did not receive the intervention. Chi-square tests and t-tests were used to compare characteristics of the control and intervention groups and the proportions of women exceeding the Institute of Medicine (IOM) recommendations for GWG. Results: The impact of the intervention was strongest for overweight women. 62.5% of the control group gained more than the recommended amount compared to 48.6% in the intervention group. Conclusion: A simple weight tracking intervention could be a cost-neutral way to help WIC participants avoid excessive GWG.

The Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) differs from other federal nutrition programs in that nutrition education is a required component. WIC programs traditionally provide in-person education, but recently some WIC sites have started offering online education. Education focused on reducing salt intake is an important topic for WIC participants because a high-sodium diet has been associated with high blood pressure, and low-income populations are at increased risk.Our aim was to examine the impacts of traditional in-person and online nutrition education on changes in knowledge, self-efficacy, and behaviors related to reducing salt intake in low-income women enrolled in WIC.Although a comparison of groups was not the primary focus, a randomized trial examining the impact of online and in-person nutrition education on participant knowledge, self-efficacy, and behaviors related to salt intake was conducted.Five hundred fourteen WIC participants from three Los Angeles, CA, WIC clinics received either in-person (n=257) or online (n=257) education. Questionnaires assessing salt-related knowledge, self-efficacy, and behaviors were administered at baseline and 2 to 4 months and 9 months later from November 2014 through October 2015.Positive changes in knowledge and self-efficacy were retained 2 to 4 months and 9 months later for both groups (P0.05). Both groups reported significant changes in behaviors related to using less salt in cooking (P0.0001) and eating fewer foods with salt added at the table or during cooking (P0.001) at 2 to 4 months and 9 months.Both online and in-person education resulted in improvements during a 9-month period in knowledge, self-efficacy, and reported behaviors associated with reducing salt intake in a low-income population. Offering an online education option for WIC participants could broaden the reach of nutrition education and lead to long-term positive dietary changes.

This paper seeks to answer the following two questions: (1) Is participation in the Supplemental Nutrition Program for Women, Infants and Children (WIC) associated with changes in obesity and overweight? and (2) What obesity prevention interventions in the WIC setting may be most effective for obesity prevention? The available evidence supports the conceptualization of the role of WIC in obesity prevention across the life course, with suggested impacts/influence on gestational weight gain during pregnancy, rapid infant weight gain during infancy, healthy lifestyle behavior during interconception, and prevalence of obesity during early childhood. Through the provision of nutrition education, breastfeeding support, and healthy foods and beverages, the WIC program has the potential to influence the mother’s nutritional knowledge and her and her child’s dietary intake and behaviors in a positive way. Given the wide reach of the program and the high quality of height/weight measurements taken by the WIC program, WIC has the potential to capitalize upon the early critical periods of development to reduce the incidence of overweight and obesity in a substantial proportion of low-income women and children.

Objective To describe Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) site-level breastfeeding support practices and associations with breastfeeding outcomes. Design Secondary analysis of WIC Infant and Toddler Feeding Practices Study–2, including data from interviews with caregivers of infants and interviews and surveys with staff from 27 WIC state agencies and 80 study sites. Participants A total of 1,235 mothers of breastfed infants participating in the WIC Infant and Toddler Feeding Practices Study–2. Main Outcome Measure Any and fully breastfeeding 2, 6, and 12 months postpartum. Analysis Descriptive statistics described WIC site-level breastfeeding supports. Multilevel mixed modeling of breastfeeding at 2, 6, and 12 months, controlling for site- and participant-level characteristics. Results Five WIC site-level supports were significantly and independently associated with any and fully breastfeeding: access to breastfeeding peer counselors, access to International Board Certified Lactation Consultants, postnatal home visits, allowing any WIC staff member to provide breast pump education, and having a policy not to provide formula during the first 30 days postpartum. Likelihood of any and fully breastfeeding increased with each additional site-level support present (odds ratio = 1.09, 95% confidence interval, 1.06–1.12; and odds ratio = 1.26, 95% confidence interval, 1.21–1.31, respectively). Conclusions and Implications Positive associations between site-level supports and breastfeeding at 2, 6, and 12 months were observed. Additional research is needed to understand how site-level supports interrelate and whether specific combinations are more effective, and to identify variations in implementation of breastfeeding supports.

Background The relationship of gestational diabetes mellitus (GDM), exclusive breastfeeding (EBF), and sugar-sweetened beverages (SSBs) on obesity prevalence in children has rarely been evaluated. Objective This study examined the association of GDM status, EBF, and SSB with obesity prevalence in children (1-5 y). Methods Data are from the 2014 Los Angeles County WIC Survey, which included 3707 mothers and their children (1-5 y). Results Compared with GDM offspring who were not EBF, GDM offspring who were EBF had lower odds of obesity, as did non-GDM offspring who were and were not EBF. Compared with GDM offspring with high-concurrent SSB intake (>3 servings/d) and no EBF, GDM offspring with high SSB intake and EBF did not have lower odds of obesity, whereas those with GDM, low SSB (≤1 serving/d), and EBF had lower odds of obesity. Using non-GDM, EBF, and low SSB as referent, non-GDM offspring who were not EBF, with either high or low SSB, had approximately a fourfold increase in odds of obesity. Conclusions In GDM offspring, EBF is only associated with lower obesity levels if later SSB intake is also low, whereas EBF is protective against obesity in non-GDM offspring regardless of high or low later SSBs intake.

OBJECTIVES: This study examined how duration of participation in the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) is associated with dietary quality at age 24 months using Healthy Eating Index-2015 (HEI-2015) scores. METHODS: Data from the WIC Infant and Toddler Feeding Practices Study-2 (WIC ITFPS-2), a longitudinal study on WIC caregivers and their children, was used to examine WIC participation and diet quality. A weighted sample of 407,416 caregivers (unweighted = 1,349) from 80 WIC sites nationwide was included. Duration of WIC participation reflects the number of interviews during which caregivers responded that they were receiving WIC benefits (9 interviews occurred between 3 and 24 months). Responses were categorized into low (