Mother’s Vitamin D Intake Could Affect Baby’s IQ

When a pregnant person is deficient in any nutrient, so is the baby, and the effects can be persistent. Researchers have long been trying to hoe in on the effects of deficiencies in these cases and have now zeroed in on deficiencies that specifically affect the tiny developing brains of fetuses. And in one surprise result, they’ve found vitamin D could be vital to our intelligence.

Vitamin D and the Body

Vitamin D does so much more than keep our bones healthy. Researchers have linked deficiencies to high blood pressure, numerous types of cancers, autoimmune diseases and increased infections. Previous research has suggested low vitamin D levels in pregnant women may increase the risks of certain health issues, such as type 1 diabetes, in their babies. Now, we’re seeing evidence that it may also affect brain development.

Past studies have uncovered evidence that developing fetuses suffering from low vitamin D levels are more apt to develop schizophrenia. Newer research shows the damage may also affect intelligence.

Normal Brain Development and Viatmin D

Vitamin D plays a vital role in numerous functions that affect brain development. When levels are low, the brain can’t regulate the types of neurons it develops or the concentrations of neurotransmitters it forms. In effect, a deficiency could change a baby’s hard-wiring, impairing their ability to learn and grow before they’ve even left the womb.

A study recently published in the Journal of Nutrition has offered good evidence for this connection. Adjusting for lifestyle factors and other issues that could affect scores, researchers found that the lower a mother’s vitamin D levels were, the lower her child’s IQ at age 4-6 years was likely to be. On the flip side, mothers who had levels on the high-normal side of the scale tended to have children with higher IQs. 

Reducing the Risks of Low Vitamin D

Experts recommend that expectant mothers stay aware of their vitamin D levels to ensure normal fetal brain development and optimize intelligence. Most of us only get small amounts of vitamin D from our food, synthesizing much of our daily intake when we’re exposed to sunlight.

Women with darker skin, who may not absorb as much sunlight, and those who live in darker northern climates, are more likely to need oral supplements. Diets high in oily fish (one of the only natural food sources), along with fortified foods like milk, bread and some types of juices, can also help fill the gaps.

Vitamin D is essential for the body no matter what stage we’re at, but getting enough could be at its most crucial before we’re even born. Pregnant women should consider having their levels checked and consulting a physician about possible supplementation if their levels are sub-optimal. Deficiencies occur throughout the world, making the effects a global health issue, and our children could be paying the highest price. Greater awareness of the problem and increased efforts in supplementation could improve the brainpower of an entire generation, benefiting us all.

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