Abstract
Objectives
To examine the association between maternal diet quality before pregnancy and childhood BMI in offspring.
Methods
We included 1936 mothers with 3391 children from the Australian Longitudinal Study on Women's Health (ALSWH) and the Mothers and their Children's Health study (MatCH). Maternal diet was assessed using a semi-quantitative and validated 101-item food-frequency questionnaire (FFQ). We used the healthy eating index (HEI-2015) score to explore maternal diet quality before pregnancy. Children over 2 years of age were categorized as underweight, normal, overweight, and obese based on age and sex-specific BMI classifications for children. Multinomial logistic regression with cluster-robust standard errors was used for analyses.
Results
Greater adherence to maternal diet quality before pregnancy was associated with a lower risk of offspring underweight after adjustment for potential confounders, highest vs lowest quartile (RRR = 0.68, 95% CI: 0.49, 0.96). Higher adherence to pre-pregnancy diet quality was also inversely associated with the risk of offspring obesity (RRR = 0.49, 95% CI: 0.24, 0.98). This association was, however, slightly attenuated by pre-pregnancy body mass index (BMI) in the full adjusted model. No significant association was observed between pre-pregnancy diet quality and offspring overweight.
Conclusions
This study suggests that better adherence to maternal diet quality before pregnancy is associated with a reduced risk of childhood underweight and obesity.
Funding Sources
The ALSWH is funded by the Australian Government Department of Health. MatCH is funded by the National Health and Medical Research Council (NHMRC) project grant. Dereje Gete is supported by the University of Queensland Research Training Scholarship. Gita Mishra holds the Australian Health and Medical Research Council Principal Research Fellowship.
Pre-pregnancy Diet Quality Is Associated With Lowering the Risk of Offspring Obesity and Underweight: Finding From a Prospective Cohort Study
