Other forms of yeast may also be found in many food products like bread, milk products, beer, peanuts, and nutritional supplements. It is used for fermentation and preparation of many common foods.Unfortunately, some people are highly sensitive to these microorganisms and develop allergic reactions to these foods.andida albicans is the most common type of fungus or yeast found in the human body. It normally exists on many surfaces of the body, including the skin and the gastrointestinal tract, coexisting with other microorganisms like bacteria and other types of fungi.