Oyster
Pleurotus ostreatus
Quiet structure, fully named.
Where organic Oyster grows
Oyster (Pleurotus ostreatus) is one of the most widely cultivated mushrooms in the world, fruiting in soft, shelf-like clusters on hardwood, straw, and other plant material. It grows readily on agricultural by-products, which has made it a staple of both wild foraging and managed cultivation across temperate and subtropical regions. The fruiting bodies are valued for their beta-glucans and other cell-wall polysaccharides. For THREEE, we use organic Oyster, sourced for the blend.
Named on the label, like everything else in the cup.
What the research explores
Oyster mushroom powder and postprandial response in impaired glucose tolerance
In a double-blind randomized controlled crossover trial, adults with impaired glucose tolerance ate a meal fortified with 20 g of dried Pleurotus ostreatus powder (8.1 g beta-glucans) or an unenriched meal; the enriched meal was associated with higher postprandial GLP-1, lower non-esterified free fatty acids, and lower hunger ratings, while postprandial glucose and insulin were unchanged.
Dicks et al., European Journal of Nutrition, 2021. PMID 34505919.
Systematic review of oyster mushroom and cardiometabolic parameters
This systematic review of eight clinical trials reported that some studies observed reductions in fasting and postprandial glucose, total cholesterol, LDL-cholesterol, triglycerides, and blood pressure following Pleurotus ostreatus intake, while noting the overall evidence was low due to methodological weaknesses and risk of bias.
Pleuran beta-glucan and immune markers in elite athletes
In a double-blind randomized controlled trial, 20 elite athletes took 100 mg/day of pleuran (insoluble beta-glucan from Pleurotus ostreatus) or placebo for two months; natural killer cell activity declined in the placebo group during recovery from intensive exercise but showed no significant reduction in the beta-glucan group.
Bobovčák et al., Applied Physiology, Nutrition, and Metabolism, 2010. PMID 21164546.
These studies describe the mushroom in research settings, not THREEE or its outcomes. They are provided for transparency and education. They have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease. Individual results vary.
What organic Oyster brings to the cup
Organic Oyster contributes beta-glucans and other cell-wall polysaccharides characteristic of Pleurotus ostreatus. It is one of ten organic mushrooms in the THREEE blend, included for the fiber and polysaccharide profile it adds to each serving.
The THREEE truth
Organic Oyster is one of ten mushrooms in the disclosed 520mg organic mushroom blend in every cup of THREEE.
A short history
A closer look at one landmark study.
In a double-blind randomized controlled crossover trial, 22 adults with impaired glucose tolerance consumed a standardized meal either fortified with 20 g of oven-dried Pleurotus ostreatus powder (providing 8.1 g beta-glucans) or without the mushroom powder. Compared with the unenriched meal, the fortified meal was associated with a higher postprandial glucagon-like peptide-1 (GLP-1) response, lower non-esterified free fatty acids, and lower hunger sensation. Postprandial glucose and insulin responses did not differ significantly between the two meals. The authors described the findings as beneficial postprandial effects observed in this population under the study conditions.
One of ten. All in one cup.
Organic Oyster is listed by name and weight, alongside the other nine mushrooms, in every cup. Nothing here depends on hurry. When you are ready, it will be in the blend, disclosed as it always is.
Shop THREEEThese statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.