Folic acid: Too much of a good thing?

As is true for many supplements, this vitamin may be a double-edged sword.

In 1996, the FDA ordered food makers to add folic acid to flour, breads, pasta, and other grain products. Babies were the reason "" folic acid helps prevent spina bifida and other birth defects. But there were also high hopes that adding this synthetic B vitamin would fight heart disease, some types of cancer, and age-related memory loss.

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