Definition: "An ergogenic aid is any substance or phenomenon that enhances performance "
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16.10.2017 |
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Yet again: eating lots of mushrooms protects against cancer
Not long ago we wrote about a Korean study in which a daily diet containing over 15 g shiitake mushrooms, oyster mushrooms and other edible fungi reduced the chance of developing breast cancer. This may not have just been a one-off. We found another Korean study with more or less the same message. It was published in 2010 in Nutrition & Cancer by researchers at the National Cancer Center in Gyeonggi-do.
Study
The most popular mushrooms were oyster mushrooms, shiitake, button mushrooms and enokitake.
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Results
Among the post-menopausal women the trend of 'more mushrooms less risk of cancer' remained intact, but was no longer statistically significant. However, you might not want to attach too much value to this: in the other Korean study we mentioned above, it was the other way around - mushrooms appeared to have a greater protective effect among post-menopausal women.
Possible mechanism
"Most research has entailed isolating pharmaceutically active mushroom compounds (e.g., alpha- and beta-glucans from Agaricus blazei, lentinan from Lentinus edodes, schizophyllan from Schizophyllum commune, grifolan from Grifola frondosa). Such polysaccharides have been hypothesized as plausible biological links to the mechanisms by which mushrooms function on macrophages, natural killer cells, and subsets of T cells."
Conclusion
"In conclusion, our findings suggest that a high intake of mushrooms is inversely associated with breast cancer risks, especially among premenopausal women, and that dietary mushroom intake may play a role in preventing breast cancer in patients with ER+/PR+ tumors."
"Given the paucity of evidence in support of the association between diet, especially the intake of mushrooms, and breast cancers as defined by hormone receptor status, further studies are needed to underpin more detailed guidelines for breast cancer prevention."
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