Magnesium is a mineral that helps the bones absorb calcium for proper growth, protects cells from calcium overload, and is vital for maintaining good health. Low magnesium levels in the body can result in high blood pressure, stroke, diabetes, osteoporosis, clogged heart arteries, and hereditary heart disease. Magnesium is present in our diet, but sometimes magnesium supplements are needed to overcome its deficiency. These supplements can also be taken as laxatives for constipation as well as preparing the bowel for surgical procedures. They can also be used as an antacid for acid indigestion.