The former is what we use for making bread, and it is quite nutritious. One tablespoon of the dried yeast has just 23 calories and 3 grams of protein but surprisingly high levels of iron, phosphorus and B vitamins. However, when taken as a supplement, live baker's yeast can cause intestinal gas. It's hard to imagine why anybody would need yeast supplements. The vitamins they contain are readily available in meat, poultry, grains, fruits and vegetables.
Most people already consume more than enough protein.
And yeast supplements contribute nothing to fiber intake or the sheer pleasure of eating real food. At the other extreme, though, are individuals who believe we should avoid yeast. Candida, in fact, is a widespread human and animal yeast that lives primarily in the mouth, throat, intestines and vagina. Unfortunately, such therapies may be a waste of time, energy and hope. So, fellow consumers, save your money.