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Vitamin D in pregnancy may boost kids’ brainpower

Jul 18, 2025

2 min

Melissa Melough
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You don't need a scientist to tell you that milk is good for babies. But a new study led by the University of Delaware's Melissa Melough sheds light on the power of prenatal nutrition — specifically vitamin D— as a key contributor to children’s brain development. The research found that children whose mothers had higher vitamin D levels during pregnancy scored better on tests of memory, attention and problem-solving skills at ages 7 to 12 compared with those whose mothers had lower levels.


Melough wrote about the study in a piece for The Conversation.


Vitamin D deficiency affects 42% of U.S. adults and about a third of pregnant women, but the average American woman consumes just 168 international units of vitamin D daily (the recommended amount is 600 ID). Many prenatal vitamins contain only 400 IU.


One promising finding could result in the solution of a racial disparity in nutrition. The study found a link between prenatal vitamin D levels and childhood cognition was strongest among Black families, who also face higher rates of vitamin D deficiency. Therefore, vitamin D supplementation could be a low-cost strategy to support brain development while reducing racial disparities.


Melough is available for interviews about the study, and can also speak to the following topics:


• Nutritional and environmental factors influencing human health.

• Populations at risk for nutritional inadequacies or harmful environmental exposures.

• The roles of endocrine disruptors in the development of obesity.

• The influences of maternal nutrition on childhood outcomes

• Novel dietary approaches to reduce chemical exposures or their associated health consequences.


To arrange an interview with Melough, visit her profile page and click on the "contact" button, or send an email to MediaRelations@udel.edu.

Connect with:
Melissa Melough

Melissa Melough

Assistant Professor, Department of Health Behavior and Nutrition Sciences

Prof. Melough studies the interrelationships of nutritional and environmental factors influencing human health.

NutritionEpidemiologyPublic HealthMolecular EpidemiologyCancer Epidemiology

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