Brewer's yeast (Saccharomyces cerevisiae) is a yeast used to make beer. It has also been used as a dietary supplement, as it contains nutrients, including chromium, B-complex vitamins, and selenium.
Brewer's yeast may benefit people with diabetes. The yeast contains chromium, which is similar to insulin and may improve insulin sensitivity. Brewer's yeast may decrease blood sugar levels. However, further research is necessary in this area.
Brewer's yeast may increase levels of "good" cholesterol (high-density lipoprotein, or HDL). Brewer's yeast is rich in lithium, and preliminary evidence suggests that it may help improve mood in recovered drug users.
Brewer's yeast is different from baker's yeast and nutritional yeast, which are both low in chromium.
B vitamins, baker's yeast, chromium-rich brewer's yeast, Cr supplements, ergosterol, faex medicinalis, folate, folic acid, glucose tolerance factor (GTF), glucose-6-phosphate dehydrogenases, glycoprotein gp200, high-chromium brewer's yeast, levure de bière (French), lithium, medicinal yeast, nicotinic acid, Saccharomyces cerevisiae, sterol, vitamin B1, vitamin B2, vitamin B3, vitamin B6.
These uses have been tested in humans or animals. Safety and effectiveness have not always been proven. Some of these conditions are potentially serious, and should be evaluated by a qualified healthcare provider.
High blood sugar/glucose intolerance
Brewer's yeast contains chromium, which may help lower blood sugar and improve sensitivity to insulin. However, there is not enough evidence to make a firm conclusion for or against the use of brewer's yeast in improving blood sugar control.
Preliminary evidence shows that brewer's yeast may increase levels of "good" cholesterol (high-density lipoprotein, or HDL). However, there is not enough evidence to make a conclusion for or against the use of brewer's yeast in improving cholesterol.
Mood enhancement (in former drug users)
Brewer's yeast contains lithium, which may enhance mood in former drug users. However, more evidence is needed to make conclusions for or against the use of brewer's yeast as a mood enhancer.