Brewer's Yeast: Benefits, Dosage, Contraindications
Other name(s)
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Family or group:
Probiotics, Super Food
Indications
Rating methodology
EFSA approval.
Irritable Bowel Syndrome ✪✪✪✪✪
A meta-analysis of results from 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 a period up to 12 weeks, could reduce abdominal pain and discomfort and improve stool consistency in patients with IBS with a predominance of constipation. It appears that benefits come to fruition only after at least a month. Additional clinical research shows that taking the same product at 2 billion CFU twice daily along with standard treatment for 8 weeks modestly improves abdominal pain and stool consistency compared to standard treatment alone. Benefits were observed within 4 weeks and were found in patients with IBS with a predominance of diarrhea, constipation, and mixed type.
Posologie
Oral route
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 Boosting ✪✪✪✪✪
A preliminary clinical study shows that taking a specific preparation of dried and 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 to placebo in adults without a history of flu vaccination. Taking this preparation does not seem to reduce the duration or severity of cold or flu symptoms that occur in these patients. However, in patients recently vaccinated against the flu, 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 days compared to placebo.
Posologie
Oral route
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, multicentric study in healthy subjects
Immunogenic yeast-based fermentate for cold/flu-like symptoms in nonvaccinated 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 beta-glucan to improve the immune defense system
Sports Performance ✪✪✪✪✪
A 13-day study with supplementation of 250 mg of brewer's yeast beta-glucan showed a reduction in certain inflammatory markers after intense exercise. No difference was observed in muscle function or creatine kinase levels between 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 experienced improved mood, with more vigor and less anger, compared to the placebo group. Note that these results are valid for a particular extract providing beta-glucan.
Posologie
Oral route
250 mg
Yestimun, revivable yeast, dried yeast
Type 2 Diabetes ✪✪✪✪✪
Due to its chromium content, brewer's yeast might benefit diabetic individuals. Chromium is involved in various physiological processes, including potentiating insulin receptors and possibly decreasing insulin resistance, improving glucose tolerance, and lowering blood sugar levels. There is also the hypothesis that brewer's yeast increases insulin release.
Posologie
Oral route
1 g
revivable yeast, dried yeast
Synergies
Skin Health ✪✪✪✪✪
Thanks to its richness in B group vitamins, and especially vitamins B5, B3, B8, and B2, brewer's yeast can contribute to skin health: - Acne (vitamins B5 and B3) - Healing - Dermatoses The use of brewer's yeast, in the form of dietary supplements, for the beauty and health of the skin and keratin appendages (hair, nails) is the most well-known indication to the public. It is advisable to take brewer's yeast courses for 2 months.
Posologie
Oral
1 g
2 - months
revivable yeast, dried yeast
Vegetarian Diet ✪✪✪✪✪
Thanks to its richness in B group vitamins and proteins, brewer's yeast can be a good supplement for vegetarians and vegans.
Posologie
Oral
1 g
revivable yeast, dried yeast
Acne ✪✪✪✪✪
Brewer's yeast is appreciated for its beneficial effects on the skin, particularly due to its richness in vitamins B5 and B3, known for their effectiveness in combating acne. These vitamins play a key role in reducing skin inflammations and promoting healthy skin.
Posologie
Oral
1 g
revivable yeast, dried yeast
Properties
Digestive Effect
Brewer's yeast can enhance the activity of intestinal disaccharidases, saccharidases, maltase, and lactase to potentially relieve diarrhea symptoms. Furthermore, it specifically activates the PPAR-alpha receptor, while inhibiting certain pro-inflammatory cytokines. This dual mechanism contributes to analgesic and anti-inflammatory effects in the intestines.
Usages associés
Anticancer
Laboratory research has revealed that brewer's yeast can induce apoptosis, i.e., programmed cell death in cancer cells of the digestive and breast systems. Moreover, ergosterol, a component of brewer's yeast, can inhibit the growth of breast cancer cells, especially those sensitive to estrogens, in the presence of estradiol-17beta. These findings suggest that brewer's yeast could have therapeutic potential in fighting certain types of cancer.
Immuno-modulator
There seems to be an interest in using brewer's yeast as an immunostimulant and for preventing viral respiratory infections. A brewer's yeast-based product derived from Saccharomyces cerevisiae shows significant immunostimulant properties. It activates and mobilizes NK (Natural Killer) cells and T lymphocytes, crucial for immune defense, and increases gamma interferon levels, an essential cytokine in the immune response. This activation plays an important role in protection against infections, particularly respiratory viruses like cold and flu.
Usages associés
Antibacterial
Brewer's yeast has antimicrobial properties, acting through the production of compounds like killer toxins or mycocins, which disrupt the cell membrane of sensitive microorganisms. It is effective against Escherichia coli and Staphylococcus, causing urinary and skin infections, as well as against Clostridium tyrobutyricum and Clostridium butyricum, associated with food poisoning.
Safety dosage
Adult: 500 mg - 2000 mg
The recommended dose varies by product. Generally from 500 mg to 2g.
Interactions
Médicaments
Monoamine oxidase inhibitor (MAOI): strong interaction
Brewer's yeast contains tyramine. Taking brewer's yeast with MAOIs could increase the risk of hypertensive crisis.
Plantes ou autres actifs
Antifungal: weak interaction
Some brewer's yeast products contain live yeast. Therefore, the simultaneous intake of antifungals may reduce the benefits of the yeast.
Precautions
Immune deficiency: avoid
It is generally accepted that people with a weakened immune system are at 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 cautiously in these patients.
Pregnant woman: use cautiously
There are no studies concerning the use of brewer's yeast in pregnant women.
Nursing woman: use cautiously
There are no studies concerning the use of brewer's yeast in nursing women.
Contraindications
Crohn's disease: prohibited
Brewer's yeast may increase the severity of Crohn's disease.
