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Background: The fetal origins hypothesis suggests that an adverse prenatal environment, indexed by low birthweight (LBW), may increase the risk of developing later disease. Recently the hypothesis has been extended to psychological outcomes, especially depression. The aim of this analysis was to test, for the first time in a developing country setting, the association between LBW and psychological symptoms, in Soweto, South Africa.Methods: A sample of 1029 children was drawn from Birth to Twenty, a longitudinal cohort followed from pregnancy to young adulthood. This sample completed the Youth Self Report at age 12 years, a validated psychological measure of behavioural and emotional adjustment. Scores were compared between LBW (<2500 g) and normal birthweight children using multivariate analysis with adjustment for potential birth and life events confounding factors.Results: No associations were found between LBW and total [adjusted odds ratio (OR) 1.09, 95% confidence interval (CI) 0.69-1.74], internalizing (adjusted OR 0.81, 95% CI 0.52-1.28) or externalizing profiles (adjusted OR 0.81, 95% CI 0.49-1.36). The only difference detected was for the internalizing sub-profile of Somatic Complaints (adjusted OR 2.02, 95% CI 1.21-3.38), which on subgroup analysis was greatest among females.Conclusions: We found no convincing evidence of an association between LBW and emotional and behavioural outcomes in 12-year olds in this sample in urban South Africa. To our knowledge, this is the first published assessment of this association in a developing world context. [ABSTRACT FROM AUTHOR]

Background: The role that childhood stunting plays in the development of overweight and obesity later in life is not well understood, particularly in adolescence and young adulthood, because most studies have only followed up through midchildhood.Objective: The objective of this study was to examine the relation between stunting and age-specific patterns of overweight and obesity incidence from early childhood to young adulthood in the context of a country in the process of the nutrition transition while these children were growing up.Methods: We analyzed data from 895 participants in the Birth-to-Twenty Plus Cohort (Bt20+), an urban South African birth cohort initiated in 1990. Anthropometric data were collected at multiple ages and participants were included if they provided height at age 24 mo and ≥1 measure of body mass index [BMI; weight (kg)/height (m)2] in each of the following time periods: 4-8 y, 11-12 y, 13-15 y, 16-18 y, and 22-24 y. We defined stunting at age 24 mo as height-for-age z score <2 and overweight as BMI z score (BMIZ) >1 in childhood (4-8 y) and adolescence (11-12 y, 13-15 y, and 16-18 y) and BMI ≥25 in young adulthood (22-24 y). We compared BMI, BMIZ, and the prevalence of overweight by stunting status, stratified by sex.Results: Our sample was 93% black and 51% female. The prevalence of stunting at 24 mo was 26% in males and 19% in females. In young adulthood, the prevalence of overweight and obesity was 15.5% (men) and 47.5% (women). Among both males and females, neither mean BMI nor a combined measure of overweight and obesity in any subsequent period differed by stunting status at 24 mo (P ≥ 0.05).Conclusion: Stunting at 24 mo was not related to the risk of overweight or obesity in this cohort. Stunting may not be an important contributor to the increasing obesity rates in urban South Africa. [ABSTRACT FROM AUTHOR]

Background: Birth weight is an important determinant of an infant's immediate and future health.Aim: This study examined associations between selected maternal psychosocial and environmental risk factors during pregnancy and subsequent infant birth weight, utilising data from the South African Birth to Twenty Plus (Bt20+) birth cohort study.Subjects: Exposure to nine maternal risks were assessed in 1228 women who completed an antenatal questionnaire and whose infants were delivered within a seven-week period.Outcome Measures: The outcome of interest was infant birth weight. Birth weight z-scores (BWZ) were calculated using the World Health Organization Child Growth Standards. Bivariate analyses and multiple regression models were used to identify significant risk factors.Results: The mean infant birth weight was 3139g (SD 486g), with a significant advantage in mean birth weight for male infants of 73g (p=0.008). Being unsure or not wanting the pregnancy was associated with a ~156g reduction in infant birth weight (β=-0.32; 95% CI -0.51; -0.14). Tobacco use during pregnancy was also negatively associated with BWZ (β=-0.32; 95% CI -0.59; -0.05). Exposure to both significant risk factors (tobacco use and pregnancy wantedness) was associated with cumulative reductions in birth weight, particularly among boys.Conclusions: This study reinforces the importance of risks related to maternal attitudes and behaviours during pregnancy, namely unwanted pregnancy and tobacco use, which significantly lowered birth weight. Both identified risks are amenable to public health policy and programme intervention. [ABSTRACT FROM AUTHOR]

Previous quantitative studies suggest a mutually reinforcing relationship between HIV counselling and testing (HCT) and antiretroviral treatment (ART). HCT is the entry into ART, and access to ART appears to increase HIV-testing uptake in settings with historically low uptake. Adopting a qualitative approach, this study examined the influence of ART on willingness to test for HIV, in a rural community in South Africa. Ninety-six in-depth interviews from a large community-based HIV-prevention trial were analysed. The data provide insight into the community members' views, perceptions and experiences regarding ART, and how they draw on these in making decisions about HIV testing. Several key factors that supported a positive relationship between ART and HIV testing were noted. These included the beliefs that ART brings hope and that it prolongs life; the powerful positive effect of witnessing the recovery of someone on treatment; and that ART encourages early HIV-testing behaviour. A few negative factors that could potentially weaken the effects of this positive relationship between ART and HCT uptake were the disclosure difficulties experienced by those enrolled in treatment, beliefs that ART does not cure HIV disease, and the travel distance to testing and treatment facilities from where people live and work. HIV/AIDS-service providers and programme planners should actively draw on these observations, to encourage increased HIV testing in communities and to ensure that the maximum number of people get the HIV treatment and care services that they require. [ABSTRACT FROM AUTHOR]