Brewer's yeast contains a good source of B complex vitamins. It may help the proper function of the immune system. The dietary yeast may also help support healthy skin. Brewer's yeast contains all the essential amino acids & has an abundance of trace minerals & elements including magnesium, iron, phosphorus, calcium & copper. The complete protein of brewer's yeast is a rarity in plant foods & is nutritionally superior to some animal protein. Brewer's yeast may help the proper function of the immune system due to the presence of glucans in the yeast. Some people find that brewers yeast can support & maintain a healthy colon.