What is the role of vitamin A in fetal development?

Vitamin A aids in both cell development and brain growth, but this vitamin does have a drawback. There have been links between excessive amounts of vitamin A and an increased risk of birth defects, especially neural tube defects. (Be careful of eating too many meal-replacement bars, each of which may have 100 percent of your daily value of A -- get into the habit of checking the nutrition labels on everything you consume.) You should consume no more than 15,000 IU a day while pregnant or just before becoming pregnant (as opposed to limiting yourself to about 3,500 IU a day from supplements and packaged foods when not pregnant).

Low levels of vitamin B6 are associated with a delay in the development of the baby's nervous system. Plus, low levels are also linked to problems for Mom (like morning sickness, preeclampsia, and complications during delivery).

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