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.

Relationship Between Vitamin D & Calcium

Published Jul,08 2011 | By Jen Morel

Calcium is a nutrient needed for strong bones, but your body cannot absorb it properly without the help of vitamin D. The combination of calcium and vitamin D helps strengthen bones and prevent osteoporosis.