Sulfur-containing compound have an important role in energy production, fibrillation, in collagen synthesis. Collagen is a main protein which forms a base for bones, fibrous tissue, skin, hair and nails and in ferments formation which are substances hastening milliards of chemical reactions in human organism).

Human need in sulfur is 1 g/day. It is satisfied with daily food ration. Lack of sulfur causes break of metabolism and pigmental exchange.

Sulfur containing is usually proportionate to proteins containing in food. It is contained mostly in ingredients of animal origin. In plants sulfur can be found in nuts, spinach, onion, garlic, cabbage, and radish.