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Place‐based policies (PBPs) associated with China's "reform and opening‐up" have played a significant role in the country's rapid economic development. However, the relationship between PBPs and residents' nutrient intake remains unexplored. To fill this research gap, this study uses longitudinal data from the China Health and Nutrition Survey (1991–2011), applies a difference‐in‐differences approach to analyze the association between PBPs and residents' nutrient intake, and sheds light on the potential mechanisms. The findings reveal that PBPs are positively associated with increased intake of total energy, fat, and protein. This relationship is facilitated through mechanisms such as promoting local employment opportunities, increasing household income, optimizing the food environment, and increasing residents' dietary knowledge. The findings also show that the increase in nutrient intake associated with PBPs is more pronounced among men, high‐income groups, individuals with higher education, urban residents, and following China's accession to the World Trade Organization. Additionally, PBPs are linked to improved self‐assessed health and a decreased likelihood of insufficient fat intake. Meanwhile, insufficient evidence supports the hypothesis that these policies are associated with overnutrition or non‐communicable diseases. [ABSTRACT FROM AUTHOR]

Purpose: Studies on developed economies showed that imposing taxes on animal-based foods could effectively reduce agricultural greenhouse gas emissions (AGHGEs), while this taxation may not be appropriate in developing countries due to the complex nutritional status across income classes. Hence, this study aims to explore optimal tax rate levels considering both emission reduction and nutrient intake, and examine the heterogenous effects of taxation across various income classes in urban and rural China. Design/methodology/approach: The authors estimated the Quadratic Almost Ideal Demand System model to calculate the price elasticities for eight food groups, and performed three simulations to explore the relative optimal tax regions via the relationships between effective animal protein intake loss and AGHGE reduction by taxes. Findings: The results showed that the optimal tax rate bands can be found, depending on the reference levels of animal protein intake. Designing taxes on beef, mutton and pork could be a preliminary option for reducing AGHGEs in China, but subsidy policy should be designed for low-income populations at the same time. Generally, urban residents have more potential to reduce AGHGEs than rural residents, and higher income classes reduce more AGHGEs than lower income classes. Originality/value: This study fills the gap in the literature by developing the methods to design taxes on animal-based foods from the perspectives of both nutrient intake and emission reduction. This methodology can also be applied to analyze food taxes and GHGE issues in other developing countries. [ABSTRACT FROM AUTHOR]

Purpose: Nutrient intake for pregnant women with gestational diabetes mellitus (GDM) is important to ensure satisfactory birth outcomes. This study aims to explore the dietary profiles of patients with GDM, compare the results with the Chinese dietary guidelines or Dietary Reference Intakes (DRIs) from China and investigate the relationship between maternal dietary intake and pregnancy outcomes. Patients and Methods: A total of 221 patients with GDM in the second trimester were included in the cohort. Dietary intake data were collected using a 24-hour recall method for three consecutive days. The pregnancy outcomes of these participants were subsequently monitored. Both univariate logistic regression and multivariate logistic regression analyses were conducted to explore the associations between dietary intake variables or general characteristics variables and adverse pregnancy outcomes. Results: Participants with adverse pregnancy outcomes showed a lower intake of iodine and vitamin D, a lower percentage of dietary energy intake from carbohydrates and a higher percentage of dietary energy intake from fats, compared to participants without adverse pregnancy outcomes. The gestational weight gain and family history of diabetes were associated with an increased risk of adverse pregnancy outcomes. Conversely, regular exercise, the intake of iodine and Vitamin D, and the percentage of dietary energy intake from carbohydrates were associated with a decreased risk. Conclusion: The daily diet of pregnant women with GDM in China did not meet the dietary guidelines or DRIs. The low intake of Vitamin D and iodine, the low dietary carbohydrate ratio, family history of diabetes, lack of exercise, and high gestational weight gain were associated with increased risk of adverse pregnancy outcomes in pregnant women with GDM. [ABSTRACT FROM AUTHOR]

Owing to the different roles of men and women in the family, women may affect family welfare differently than men. Existing research only analyzes the impact of non-farm employment or male non-farm employment on family welfare, and the impact of female non-farm employment on the family has not been addressed in existing studies. China is a particularly interesting case given its rapid economic development and rising rates of female non-farm employment. We used data from the China Health and Nutrition Survey to analyze the dietary patterns of family members and identify the factors that influence food choices and nutrient intake. The results showed that female non-farm employment reduced household protein and calorie intake levels and increased the frequency of dining out among rural household members. [ABSTRACT FROM AUTHOR]

With the progress of economic development and increase in income, there have been significant transformations in the food consumption patterns among Chinese residents. Grain consumption has declined while the consumption of livestock products such as meat, poultry, eggs, and milk has gradually risen. Moreover, noteworthy adjustments have been observed in the meat consumption structure itself, with a substantial increase in poultry consumption and a significant decrease in pork consumption as representative of red meat. This study collects data mainly from the "Brick Agricultural Database" and "China National Grain & Oils Information Center". And then, we employ the China Agricultural Industry Model (CASM) to simulate the economic and ecological consequences of augmenting poultry consumption as a substitute for red meat intake. The research findings demonstrate that ensuring an adequate intake of livestock products for residents without any decline will stimulate the doubling of China's poultry meat demand by 2035 compared to 2020 while replacing pork. This would reduce feed grain requirements by 50 million tons and achieve carbon emission reductions amounting to 82 million tons. If we consider the consumption of poultry consumption growth in conjunction with its substitution for other red meats such as pork, beef, and mutton, this will save approximately 20 million tons of feed grains and lead to a reduction of around 103 million tons in carbon emissions. In conclusion, promoting future increases in poultry consumption as a substitute for pork and other red meat will yield extensive economic andecological benefits contributing toward international food security goals, as well as global carbon reduction targets. Additionally, advocating for increasing poultry consumption will also reduce the risk of chronic diseases and malignant tumors; this will significantly improve the national health states. [ABSTRACT FROM AUTHOR]

Purpose: The purpose of this study is to assess the impact of rising food prices on food demand and nutrient intake among rural–urban migrants and whether such impact varies across income classes. Design/methodology/approach: Using data from the China Health and Nutrition Survey (CHNS), this study adopts a quadratic almost ideal demand system (QUAIDS) for food demand elasticity and an indirect estimation method for nutrient elasticity to investigate the effects of rising food prices on food demand and nutrient intake among rural–urban migrants. Findings: The estimated results indicate that an increase in the price of pork alone would lead to a larger reduction in most nutrients among rural–urban migrants than other single targeted food group, and a simultaneous rise in the price of all food groups would have a remarkably adverse effect on the nutritional status of rural–urban migrants in comparison to the nutritional effects of a rise in one targeted food group. In addition, the nutritional effects of food prices across income classes show that the nutritional status is particularly vulnerable to rising food prices among low-income rural–urban migrants. Originality/value: This paper focuses on analyzing the impact of rising food prices on the nutritional status of rural–urban migrants, a topic that is very limited in the literature. This study provides a fresh look at the effect of volatile food prices on food demand and nutrient intake among rural–urban migrants. The results indicate that income growth would have a remarkable positive effect on nutrient intake for rural–urban migrants, especially for low-income rural–urban migrants. However, an increment in nutrients due to a growth in income would not be far from enough to cover the reduction in nutrients as a result of a simultaneous rise in price of all the studied food categories at the same rate. [ABSTRACT FROM AUTHOR]

Using data from the China Health and Nutrition Survey, we examine the effect of the number of siblings on dietary quality with a sample of 2–12-year-old children in China. We use instrumental variables to address the potential endogeneity of the number of siblings. We show that the effect of the number of siblings on children's dietary quality is significantly negative. Child dietary diversity score will decrease by 0.274 with one more siblings. In terms of children's nutrition, the intake of fat and protein also significantly decrease. A robustness check using the fixed effects models also validates our findings that child quantity–quality trade-off is apparent in Chinese families. [ABSTRACT FROM AUTHOR]

Background and Objectives: Diet is a modifiable risk factor of T2DM with the potential to improve the patients' quality of life. The diet-diabetes relationship has received considerable attention in past decades. This study describes dietary intake of nutrients in a matched case-control study of adults with and without T2DM.Methods and Study Design: Dietary nutrient intake was evaluated by semi-quantitative FFQ and biochemical indexes were studied in enrolled 207 participants with T2DM (diabetes group) and 215 healthy participants (control group). The t-test of two independent-sample and chi-square test were used to compare data by age and other characters. Exploratory factor analysis was used for dietary pattern analysis. Logistic regression analysis were used to test the effect of different dietary patterns and dietary intakes on the risk of T2DM.Results: The blood glucose, triglyceride and low-density lipoprotein cholesterol levels were significantly higher in the diabetes group (p<0.05). Three major dietary patterns were identified, "High-salt and high-fat", "Traditional Chinese" and "Western" dietary patterns. With or without adjustment, highest quintile of high-salt and high-fat dietary pattern showed a significantly higher risk of T2DM than the lowest quintile. (OR=2.08, 95%CI: 1.24, 3.49, OR=1.70, 95%CI: 0.98, 2.54, OR=1.67, 95%CI: 0.97, 2.51).Conclusions: Individuals with a high-fat and high-salt dietary pattern had an increased risk of T2DM. These findings offered further insights into the dietary structure of T2DM patients. These findings put nutrition education at the center for T2DM patient management. Further follow-up study is needed to assess the dynamic changes of nutrient-metabolism association. [ABSTRACT FROM AUTHOR]

Purpose: This study estimates the income elasticities of calorie, macronutrients (carbohydrate, protein and fat) and key micronutrients including cholesterol, vitamin A, vitamin C, sodium, potassium, calcium, iron, zinc and insoluble fiber separately for urban and rural adults aged 18–60, using China Health and Nutrition Survey data set from 2004 to 2011. Design/methodology/approach: A semiparametric model, a two-way fixed-effects model and a quantile regression approach are employed to estimate nutrient–income elasticities. Findings: The income elasticities of calorie, protein, fat, cholesterol and calcium are in the range of 0.059–0.076, 0.059–0.076, 0.090–0.112, 0.134–0.230, 0.183–0.344 and 0.058–0.105, respectively. The income elasticity of each of the other nutrients is less than 0.1. The income elasticities of calorie and the majority of nutrients included are larger for rural residents than for urban residents and for low-income groups than for medium- and high-income groups. Overall, in spite of having a relatively small impact, income growth is shown to still have an impact on improving the nutritional status of Chinese adults. Originality/value: This study estimates nutrient–income elasticities separately for urban and rural adults, expanding the scope of the study regarding the impact of income on the nutritional status in China. Moreover, this study uses a pooled sample generated from the personal food consumption records covering foods consumed at home and away from home during 2004–2011, which is thus likely to more comprehensively reveal the causal relationship between income growth and changes in the nutritional status in China. [ABSTRACT FROM AUTHOR]

This study employs panel data and a dynamic Almost Ideal Demand System (AIDS) model to investigate the habit formation effect of food consumption among Chinese rural residents and its consequential impact on nutritional intake. The dataset, spanning from 2012 to 2018, encompasses nine provinces in China and involves 5390 rural households. The findings reveal that, excluding beef, mutton, and poultry, there are significant habit formation effect on the consumption of food categories, notably grains, vegetables, and edible oils. Lower-income and younger demographics demonstrate a more pronounced reliance on established dietary habits. Influenced by the habit formation effect, there is a substantial reduction in the income elasticity differences across various food types. Overlooking the habit formation effect in food consumption would lead to an underestimation of the income elasticity of energy, fat, and carbohydrates. This suggests that, over the long term, food consumption habit formation is a pivotal factor in enabling the enhancement of residents' dietary structures, amplifying the incremental energy intake associated with income increases, and accelerating the transition towards nutritional surplus. The conclusions drawn from this study offer valuable insights for ensuring food security and nutritional balance. Policy-makers of food and nutrition strategies should duly consider the habit formation effect on residents' food consumption, and seek to optimize dietary patterns and promote nutritional transformation by food consumption habit intervention.

Background: Premature thelarche (PT) is a benevolent ailment affecting young girls. Multiple factors are reported to correlate with this condition, but the mechanisms responsible for the onset of PT have not yet been fully investigated. This study aimed to evaluate the relationship of nutrient intake, insulin resistance and lipid profile with PT. Methods: Two hundred sixty-three girls with PT, and 222 healthy girls of similar age were enrolled into this study. Their demographics, Tanner stage of breast development, nutrient intake, insulin resistance and lipid profiles were compared. Results: Daily protein and fat intakes, insulin resistance parameters including serum insulin-like growth factor 1, fasting glucose to insulin ratio, quantitative insulin check index and homeostasis model of assessment of insulin resistance, as well as serum levels of triacylglycerol, total cholesterol and low-density lipoprotein, were all significantly altered in PT patients. Daily intake of energy and carbohydrate, and serum level of high-density lipoprotein protein were statistically indistinguishable between PT patients and healthy controls. Conclusion: Chinese girls with PT are potentially insulin resistant, which warrants more clinical attention and further investigation to address the underlying etiology. [ABSTRACT FROM AUTHOR]

Objective: To describe nutrient intakes, characterize dietary patterns and analyse their associations with sociodemographic characteristics among pregnant women in Shaanxi, China.Design: Population-based cross-sectional survey.Setting: Twenty counties and ten districts in Shaanxi Province of Northwest China, 2013.Subjects: Women (n 7462) were recruited using a stratified multistage random sampling method to report diets during pregnancy, at 0-12 months (median 3 months; 10th-90th percentile, 0-7 months) after delivery.Results: Pregnant women had higher intakes of fat, niacin and vitamin E than the nutrient reference values, while most micronutrients such as vitamin A, folate, Ca and Zn were reportedly low. Women in the highest education, occupation and household income groups had higher nutrient intakes than those in the lowest groups. Nutrient intake differences also existed by geographic area, residence and maternal age at delivery. Three dietary patterns were identified: balanced pattern, vegetarian pattern and snacks pattern. Participants with high balanced pattern scores tended to be better educated, wealthier, 25-29 years old at delivery, working outside and living in urban areas and central Shaanxi. Women with high scores on the vegetarian pattern and snacks pattern tended to be in low balanced pattern score groups, and had lower nutrient intakes than those in the high balanced pattern score groups.Conclusions: The study suggested that pregnant women in Shaanxi, China had low intakes of most nutrients such as vitamin A, folate and Ca. Dietary patterns and most nutrient intakes varied by sociodemographic characteristics. Targeted programmes are needed to improve dietary intakes and dietary patterns among sociodemographically disadvantaged groups. [ABSTRACT FROM AUTHOR]

Summary This paper uses Chinese household data for 1989–2009 to explain why mean nutrient intake has declined despite economic growth. We focus on household heterogeneity in nutrient intake response to increases in household income allowing for its endogeneity. A quantile instrumental-variable fixed-effects panel estimation shows that rising income tends to reduce inequality in macronutrient intake in both urban and rural areas in 2004–09. This is driven by increases in nutrient intake for the urban nutrient poor and falls in nutrient intake for the rural nutrient non-poor. On the other hand, fluctuations in prices of meat, eggs, and oil increase nutrition poverty. [ABSTRACT FROM AUTHOR]

The subjects, from Mongolian-style gel tribes, aged 6-79 years, living in three different areas of Inner Mongolia, were asked about their daily food consumption in August 2001 using the 24-hr dietary recall method. There were no significant differences in food intakes between males and females of the same age group in the same area, with a few exceptions, although considerable variation was found among individuals and areas for the amount of foods consumed. Some subjects consumed greater amounts of wheat, vegetables, fruits, and vegetable oils, which suggested they had changed their eating patterns. All subjects drank large quantities of tea, to which was added milk (sheep/goat), cream, butter, parched millet and/or sawa. This traditional tea supplied vitamins and minerals such as vitamin A, iron and calcium. [ABSTRACT FROM AUTHOR]

This study documents the dietary patterns and nutrient intake of 652 adult women living in south-east China. Compared with data from previous national surveys and other nutrition studies in China, the results show different dietary patterns. The major differences include a greater consumption of vegetables, fruits and animal foods, but a lower consumption of cereal and tuber foods. The mean daily nutrient intakes of the urban women met the Chinese recommended dietary allowances. However, the situation was different in rural areas, where women had lower mean intakes of vitamins and minerals. There were also significant differences in dietary pattern and food consumption between these two groups of women. Further improvements in dietary intake for those residing in the south-east rural areas of China are needed. [ABSTRACT FROM AUTHOR]

Health and longevity populations have distinct metabolic and nutrient intake profiles. However, the relationship between biomarkers of longevity-related metabolites and dietary nutrient intake profiles, as well as metabolic markers associated with longevity features, have not been fully elucidated. Therefore, 1 H nuclear magnetic resonance ( 1 H NMR)-based plasma metabolomics profiling was conducted in the present study to identify potential metabolites which can be used as specific markers for the evaluation of healthy aging. Plasma samples were obtained from centenarians and nonagenarians from the longevous region, and elderly participants aged 60-89 from the longevous region, as well as a low centenarian ratio region. The results showed that participants from longevous regions exhibited higher plasma levels of citrate, tyrosine, choline, carnitine, and valine, as well as lower contents of VLDL, lactate, alanine, N -acetyl glycoprotein (NAG), trimethylamine oxide (TMAO), α-glucose, β-glucose, and unsaturated lipids. The differential plasma metabolites were associated with an alteration in glycolysis/gluconeogenesis; aminoacyl-tRNA biosynthesis; alanine, aspartate, and glutamate metabolism; and phenylalanine, tyrosine, and tryptophan biosynthesis in participants from longevous regions. The signature metabolites were associated with higher dietary fiber intake, as well as lower energy and fat intake. The results of the present study demonstrate key longevity signature metabolites in plasma, and the dietary patterns identified provide a basis for further health and longevity research.

Background: Dietary nutrient intake plays a significant role in carcinogenesis. Few studies have investigated the association between dietary nutrient intake and cervical intraepithelial neoplasia (CIN) risk in China. Methods: Data on 2304 women from an ongoing cohort comprising 40,000 women from China in 2014 were included. Study randomly selected 218 out of 2304 people as subjects during 2019. All participants were surveyed through in-person interviews, physical examinations, and laboratory tests. Clinical data were obtained from physical examinations and laboratory tests. Dietary intakes were assessed using a semiquantitative food frequency questionnaire. Nutrition intakes from 26 food sources were calculated using a comprehensive validated database. Descriptive statistics were used to describe the frequency and proportion, and mean and standard deviation of the demographic characteristics. Characteristics were examined for significant differences, and Pearson chi-square tests were used for categoric variables. Logistic regression was used to obtain odds ratios (ORs) and confidence intervals (CIs) for CIN risk in each nutrient intake quartile relative to that in the highest quartile. Results: The food frequency questionnaire exhibited acceptable reproducibility and reasonable validity in assessing nutrient intakes among these women. After adjusting for multiple confounders, several dietary nutrients showed significant associations with CIN2+ risk. Low dietary folate intake was associated with the risk of CIN2+ (first versus fourth quartile: OR = 1.55, 95% CI 1.03–2.33). Similar results were also observed for vitamin B6 (OR = 1.63, 95% CI 1.08–2.46), vitamin C (OR = 1.59, 95% CI 1.05–2.42), niacin (OR = 1.65, 95% CI 1.08–2.51), and vitamin K (second versus fourth quartile: OR = 1.60, 95% CI 1.05–2.44). Conclusions: Low folate; vitamin B6, C, and K; and niacin intakes were associated with CIN2+ risk. Nutrients may influence the development of higher grade CIN and cervical cancer. Trial registration The study was registered in the Chinese Clinical Trial Register (ChiCTR-ROC-15006479) (https://www.chictr.org.cn). [ABSTRACT FROM AUTHOR]

Improvements in nutritional status is a principal pathway to good health. This study examines the effect of migration of adult children on the nutrient intake of left-behind older adults in rural China. We use data from four waves (2004-2011) of the China Health and Nutrition Survey and utilize individual fixed effects methods to panel data. Results show that the migration of offspring is associated with significantly higher nutritional status of their left-behind parents, especially higher intake of proteins, carbohydrates, vitamins B1-B3, phosphorus, magnesium, iron, selenium, and copper. The intake of some of these nutrients is below recommended levels. The magnitude of the estimated effects vary between 4% and 24 %. Older adults who live with their grandchildren in rural households or have a low income benefit more from having adult child migrants in the household. The improvement of nutrition outcomes of left-behind older adults is mainly due to increased consumption of cereals, meat, eggs, and fish., (Copyright © 2021 Elsevier B.V. All rights reserved.)

Objectives: The aim of this systematic reviews was to synthesize the current studies for the effectiveness of intradialytic resistance exercises with usual care on HD people., Design: Meta-analysis of randomized controlled studies., Methods: A systematic search of seven electronic databases, including PubMed, EMBASE, the Cochrane Library, Web of Science, WanFang, China National Knowledge Infrastructure (CNKI) and SINOMED, was systematically searched up to May 2018. The reference lists of previously reported systematic review were also checked. Pooled analysis was used to determine effection of intradialytic resistance exercises for haemodialysis people. Physical performance, nutrient intake and quality of life were explored, by comparing the association between effect sizes., Results: Fourteen studies of 594 people were included. Compared with control groups, intradialytic resistance exercises significantly improve physical performance included 6-min walk test, sit-to-stand 30 and grip strength. However, no significant improvements were found in nutrient intakes such as dietary protein intake and quality of life., (© 2019 The Authors. Nursing Open published by John Wiley & Sons Ltd.)

Across countries, the predominant diets are clearly different and highly related with human health. Therefore, it is necessary to evaluate dietary nutrients between them. This study aimed to evaluate dietary nutrients in China and compare those between Chinese and Mediterranean (Italian), Japanese and American diets. Dietary intakes of 2659 subjects in south-east China, Zhejiang province, from 2010 to 2012, were estimated by three consecutive 24-h dietary recalls. The contribution of carbohydrate to total energy in Chinese subjects was lower than that in Japanese and American subjects, but higher than that in Italian subjects. However, the energy contribution from fat in Chinese subjects was higher than that in Japanese and American subjects, and similar to that in Italian subjects. Moreover, the Chinese diet had lower daily intakes of fiber, calcium, phosphorus, potassium, selenium, vitamin A, vitamin B1, vitamin B2 and vitamin C, compared with the Japanese, American and Italian diets. Nevertheless, intakes of sodium, iron, copper and vitamin E were higher among Chinese people relative to the people of other three countries. The present study demonstrated that the structure of the Chinese diet has been shifting away from the traditional diet toward high-fat, low-carbohydrate and low-fiber diets, and nutrients intakes in Chinese people have been changing even worse than those in American people.