Magnesium deficiency can be caused by bad nutrition. However, nowadays industrially produced foods, contain as well as the natural foods much less minerals than before. A magnesium deficiency can be demonstrated by the lack of concentration or sleeping problems. Also, vitamin C can not be used by the body without magnesium for the immune system. Therefore, one should pay particular attention to a healthy, organic diet. Here, the metabolic-direct © program might be helpful, since the program is based on a healthy and balanced diet with enough minerals and trace elements.