Magnesium is a major mineral.
Magnesium helps convert carbohydrates, protein, and fat from the diet into energy.
Magnesium helps regulate muscle contraction, heartbeat, nerve transmission, and bone formation. Magnesium is important for making protein and the genetic material within each cell. The Daily Value for magnesium is 400mg. per day. Magnesium needs might increase above recommended levels as a result of exercise, stress, and when taking calcium supplements. Magnesium toxicity reportedly is rare because excesses are excreted by the kidneys.