Zinc - the killer of fatigue In addition to supplements, functioning and various supplements, our body needs to 100% and the so-called trace substances. The designation "trace" means that our body needs it only in small amounts. We need 10mg of zinc per day, which is 37 times smaller compared to magnesium (375mg). It would seem that we are talking about a complete uselessness. However, the opposite is true. Zinc affects over 200 biochemical reactions in our body! A zinc deficiency in the body is a disaster waiting to happen. Fatigue, mood swings, memory problems, hair loss, dry, papery skin, brittle nails, skin damage... These are just a few reliable indicators that you are lacking this trace element. In addition, zinc is important for the production of insulin. And although it seems that we can supply the body with it very quickly, since a triple dose is only 30 mg, it is definitely better to take the recommended short-term dose than a large amount. The European Food Safety Authority has set the single daily intake of zinc at 25 mg.