Vitamin supplementation during pregnancy could prevent hydrocephalus, a common birth brain defect. Tests on rats showed a combination of folates dramatically reduced the rates of hydrocephalus - in which fluids build up in the brain's chambers. Most of those with the condition have impaired mental and physical ability, although the effects can vary widely. In the UK experiments, the folates seemed to work even after the condition had started to develop. But the work, published in the Journal of ...
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