Magnesium Deficiencies are Quite Common One of the most common supplements I prescribe in my practice is magnesium. While magnesium can be found in a variety of foods, it is often deficient in the average American diet.  A recent study on magnesium in the American diet, has shown  that nearly thirty-two percent of Americans do not get adequate magnesium.  Junk food, fast food, is partly to blame, but poor nutritional absorption may also be a leading factor. The Signs and Symptoms of a Deficiency Symptoms of a deficiency can include muscle cramps, irregular heartbeat, mental disturbances such…