A new review reveals how folic acid can act as both a friend and foe in breast cancer, protecting at moderate doses, but potentially fueling tumor growth when intake is excessive or genes go awry.

When the Institute of Medicine announced last fall that it was changing the amount of vitamin D it recommends most adults get each day from 200 international units (IU) to 600 IU, some critics ...

Consult your doctor before breastfeeding. If your brand of multivitamin also contains folic acid, be sure to tell your doctor or pharmacist if you take certain anti-seizure drugs (including ...

Consult your doctor before breastfeeding. If your brand of multivitamin also contains folic acid, be sure to tell your doctor or pharmacist if you take certain anti-seizure drugs (such as ...