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.

What Are the Causes of Low Magnesium & Potassium?

Published Jul,08 2011 | By Amy O'Connell

Magnesium and potassium are elements in the body that are important for muscle and heart function. Certain conditions can cause the blood levels of either or both of them to be low. Low levels can cause muscle spasms or abnormal heart rhythms.