Supplements Guide: Side Effects & Best Multivitamins

Vitamins and supplements like melatonin and fish oil offer health benefits but can cause side effects if misused. Learn about the impact of saw palmetto on blood pressure and find the best multivitamins for young women and adults over 50.

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Symptoms of Low B12

Vitamin B-12, also called cobalamin, helps make DNA and keeps nerve and blood cells healthy. A deficiency in Vitamin B-12 can cause irreversible damage to the nerve cells and impair the quality of life. One in five adults over age 51 has a vitamin B-12 deficiency. Adults get 2.

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