An interesting complement to the use of yeast, dietary supplement that can do more than the dough. Added in yogurts, salads, soups, and thanks to its vitamins, especially the B group, comes to the end of our digestive problems, skin problems, hair, which she fights their fall, gives a glowing complexion increases our immunity, making us stronger to face colds, increases physical strength when sports, intestinal rebalanced, thwarts the effects of time, for aging without losing our energy, fight against stress and insomnia, etc. The author makes an almost complete overview of this valuable food supplement, which nevertheless has some cons-indications, which are well detailed, such as headaches and itching that can trigger, or not take in case of gluten allergy and cons-indication, according to some authors, in case of celiac disease, or when taking MAOIs whose association can cause high blood pressure. I read in a book by Dr. Valnet, that taking a long time and without interruption of yeast beer, caused sterility in laboratory rats. In general, we do not take supplements without interruption, and you must go to a therapist and, if in doubt, ask them.