Brewer’s yeast is a nutritional product that fills the gap between foods and supplements. Technically, Brewer’s yeast is a food as it is a by-product of the brewing industry and can be used as a food ingredient. However, it is often tabletted and in this regard can be thought of as a nutritional supplement. Brewer’s yeast is of interest nutritionally because it is highly nutrient dense and is a good source of B vitamins and chromium. Further, brewer’s yeast also has high levels of protein and contains a high amount of essential amino acids. The nutritional properties of brewer’s yeast have been known as far back as the early part of the 20th century where a series of animal studies showed that supplements of brewer’s yeast could prevent nutritional deficiencies and improve animal condition. More recently these experiments have been expanded to include the benefits to humans which broadly follow the same pattern as seen in animals. The nutritional benefits likely derive from a combination of the minerals, vitamins and essential amino acids found within brewer’s yeast, which likely act synergistically in some cases.
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