While calcium is a vital mineral necessary for strong and healthy bodies, excess calcium intake can produce a phosphorus and magnesium deficiency, resulting in symptoms almost IDENTICAL to that of a calcium deficiency. A continued loss of magnesium will contribute to increased sodium retention and eventually a vitamin A deficiency, among many others. Calcium must be in balance with the other minerals in the body. If not, it will not be utilized in the body, and can lead to further damages (specifically those that are trying to be avoided in the form of a calcium supplement). Results may vary by individual, consult your doctor today and see if this is right for you!