Magnesium is a mineral that participates in more than 300 reactions in the body and is critical to many bodily functions. It promotes bone, nerve, and muscle health. The Recommended Daily Allowance (RDA) of Magnesium varies by age. For adult males over 30 the RDA is 420mg. For adult females over 30 years of age RDA is 320mg however this increases to 360mg during pregnancy. As much as 48% of Americans of all ages ingest less magnesium from food and beverages than their respective Estimated Average Requirement.