Metals are essential factors in human nutrition. They are not synthesized by the body, but must be obtained ready-made from the diet. Metals are components of bones, teeth, soft tissues, muscles, blood, and nerve cells. They also function as catalysts for many biological reactions in the body and are important for the production of hormones. Magnesium is a basic element of bones and essential for the correct distribution of calcium in the body. Zinc is necessary for the correct production of bone tissue. Useful supplement in cases of menopause.