Consuming mushrooms severaltimes a week might help lower a mans risk of prostate cancer (PCa), accordingto new research published in the InternationalJournal of Cancer.
In a study of 36,499 Japanesemen (ages 40-79 years) from the Miyagi and Ohsaki cohorts, PCa developed in 1204(3.3%) over a median 13 years. Men older than 50 years who habitually consumedmushrooms once or twice a week or, better yet, 3 or more times per week had 8%and 17% lower risks of PCa, respectively, than men who ate mushrooms less thanonce weekly. The association persisted regardless of PCa stage or intake ofvegetables, fruit, meat, or dairy products. The study lacked information onintake of dietary supplements.
Since information on mushroom species was not collected, it is difficult to know which specific mushroom(s) contributed to our findings. Also, the mechanism of the beneficial effects of mushrooms on prostate cancer remains uncertain, said lead author Shu Zhang, PhD, of the Tohoku University School of Public Health, in Japan, in a journal news release.
Large amounts of the antioxidants L-Ergothioneine and glutathione reportedly exist in shiitake, oyster, maitake, and king oyster mushrooms, the investigators noted. White button mushrooms are thought to have anti-cancer activity. In addition, preliminary studies indicate that extracts ...