What is Magnesium? Magnesium is one of the most powerful minerals in our bodies, responsible for over 300 different enzyme reactions in your body. Yes, that could be 300 different problems if you are deficient. Without adequate magnesium you cannot make the happy hormone serotonin, and you will have fatigue from faulty energy production, brittle bones and numerous other health problems. One of the major jobs of magnesium is its effect as a buffering mineral used by the body to neutralize acids. Chronic stress and the acid-producing effects of caffeine, alcohol, processed foods, soft drinks, and sugar deplete magnesium stores in the body. The typical Western diet is high in acidic foods and low in magnesium rich foods. This is a major cause of health problems. You can assess your body's pH by checking your first morning urine with pH strips.