Brewer's yeast: benefits, dosage, contraindications
Family or group:
Probiotics, Superfood
Indications
Scoring methodology
EFSA approval.
Irritable bowel syndrome ✪✪✪✪✪
A meta-analysis of the results of two clinical studies shows that daily intake of 500 mg or 1000 mg of the specific brewer's yeast strain CNCM I-3856, standardized to 8 billion colony-forming units (CFU) per gram, for up to 12 weeks, may reduce abdominal pain and discomfort and improve stool consistency in patients with constipation-predominant IBS. It appears that at least one month is required for benefits to manifest. Additional clinical research shows that taking the same product at a dose of 2 billion CFU twice daily in addition to standard treatment for 8 weeks modestly improves abdominal pain and stool consistency compared with standard treatment alone. Benefits were evident within 4 weeks and were observed in patients with diarrhea-predominant, constipation-predominant, and mixed-type IBS.
Posologie
Oral
500 - 1000 mg
revivable yeast, CNCM I-3856
Saccharomyces cerevisiae CNCM I-3856 in irritable bowel syndrome: An individual subject meta-analysis
https://pubmed.ncbi.nlm.nih.gov/35979259/
Efficacy of Saccharomyces cerevisiae CNCM I-3856 as an add-on therapy for irritable bowel syndrome
Immune support ✪✪✪✪✪
A preliminary clinical study shows that taking a specific preparation of dried, inactive brewer's yeast at a dose of 500 mg per day for 12 weeks reduces the incidence of cold or flu symptoms by 10 to 20% compared with placebo in adults with no history of influenza vaccination. Taking this preparation does not appear to reduce the duration or severity of cold or flu symptoms that occur in these patients. However, in patients recently vaccinated against influenza, clinical research shows that taking this same preparation at a dose of 500 mg per day for 12 weeks reduces the risk of developing cold or flu symptoms by about 11% and reduces the duration of symptoms that develop by 0.85 day compared with placebo.
Posologie
Oral
500 mg
Yestimun, EpiCor
Yeast (1,3)-(1,6)-beta-glucan helps to maintain the body's defense against pathogens: a double-blind, randomized, placebo-controlled, multicenter study in healthy subjects
Immunogenic yeast-based fermentate for cold/flu-like symptoms in unvaccinated individuals
Effects of a modified yeast supplement on cold/flu symptoms
Yeast Beta-Glucan Supplementation Downregulates Markers of Systemic Inflammation after Heated Treadmill Exercise
A double-blind, randomized, placebo-controlled nutritional study using an insoluble yeast beata-glucan to improve the immune defense system
Athletic performance ✪✪✪✪✪
A 13-day study with supplementation of 250 mg of brewer's yeast beta-glucan showed a reduction in certain inflammatory markers following intense exercise. No differences were observed in muscle function or creatine kinase levels between the groups. However, a decrease in myoglobin, a muscle protein released during muscle damage, was noted after 72 hours in the supplemented group. This group also reported an improved mood, with greater vigor and less anger, compared to the placebo group. Note that these results apply to a specific extract providing beta-glucans.
Posologie
Oral administration
250 mg
Yestimun, revivable yeast, dried yeast
Type 2 diabetes ✪✪✪✪✪
Because of its chromium content, brewer's yeast may benefit people with diabetes. Chromium is involved in several physiological processes, including potentiation of insulin receptors and the possible reduction of insulin resistance, improved glucose tolerance, and lowered blood glucose. There is also a hypothesis that brewer's yeast increases insulin release.
Posologie
Oral administration
1 g
Revivable yeast, dried yeast
Synergies
Skin health ✪✪✪✪✪
Thanks to its richness in B vitamins and particularly vitamins B5, B3, B8 and B2, brewer's yeast may contribute to skin health: - Acne (vitamins B5 and B3) - Wound healing - Dermatoses The use of brewer's yeast, in the form of dietary supplements, for the beauty and health of the skin and appendages (hair, nails) is the best-known indication to the general public. It is recommended to take brewer's yeast supplements for 2 months.
Posologie
Oral administration
1 g
2 months
re-hydratable yeast, dried yeast
Vegetarian diet ✪✪✪✪✪
Thanks to its richness in B vitamins and proteins, brewer's yeast can be a good supplement for vegetarians and vegans.
Posologie
Oral administration
1 g
re-hydratable yeast, dried yeast
Acne ✪✪✪✪✪
Brewer's yeast is valued for its beneficial effects on the skin, notably due to its richness in vitamins B5 and B3, which are recognized for their effectiveness in fighting acne. These vitamins play a key role in reducing skin inflammation and promoting healthy skin.
Posologie
Oral administration
1 g
re-hydratable yeast, dried yeast
Properties
Digestive effect
Brewer's yeast can increase intestinal disaccharidase, saccharidase, maltase and lactase activity to potentially relieve symptoms of diarrhea. nnIn addition, it specifically activates the PPAR-alpha receptor while inhibiting certain cytokines that promote inflammation. This dual mechanism contributes to analgesic and anti-inflammatory effects in the intestine.nn
Usages associés
Anticancer
Laboratory research has revealed that brewer's yeast can induce apoptosis, that is, programmed cell death, in digestive system and breast cancer cells. nnIn addition, ergosterol, a component of brewer's yeast, can inhibit the growth of breast cancer cells, particularly those that are estrogen-sensitive, in the presence of estradiol-17β. These findings suggest that brewer's yeast may have therapeutic potential in the fight against certain types of cancer.nn
Immunomodulatory
There appears to be interest in using brewer's yeast as an immunostimulant and to prevent viral respiratory infections.nnA brewer's yeast-based product derived from Saccharomyces cerevisiae shows significant immunostimulant properties. It activates and mobilizes NK (natural killer) cells and T lymphocytes, which are crucial for immune defense, and increases levels of interferon-gamma, a cytokine essential to the immune response. nnThis activation plays an important role in protection against infections, particularly respiratory viruses such as the common cold and influenza. nn
Usages associés
Antibacterial
Brewer's yeast has antimicrobial properties, acting through the production of compounds such as killer toxins or mycocins, which disrupt the cell membrane of susceptible microorganisms. It is effective against Escherichia coli and Staphylococcus, which cause urinary and skin infections, as well as against Clostridium tyrobutyricum and Clostridium butyricum, which are associated with foodborne illness.
Safe dosage
Adult: 500 mg - 2000 mg
The recommended dose varies by product. Generally 500 mg to 2 g.
Interactions
Médicaments
Monoamine oxidase inhibitor (MAOI): strong interaction
Brewer's yeast contains tyramine. Taking brewer's yeast with MAOIs could increase the risk of a hypertensive crisis.
Plantes ou autres actifs
Antifungal: minor interaction
Some brewer's yeast products contain live yeast. Therefore, taking antifungals simultaneously may reduce the benefits of the yeast.
Precautions
Immunodeficiency: avoid
It is generally accepted that people with a weakened immune system have an increased risk of developing a fungal infection when using brewer's yeast. Cases of fungemia caused by Saccharomyces cerevisiae have been observed in severely immunocompromised patients. Therefore, it is advised to use brewer's yeast with caution in these patients.
Pregnant women: use with caution
There are no studies concerning the use of brewer's yeast in pregnant women.
Breastfeeding women: use with caution
There are no studies concerning the use of brewer's yeast in breastfeeding women.
Contraindications
Crohn's disease: contraindicated
Brewer's yeast may increase the severity of Crohn's disease.
