As well as helping the insulin resistance often associated with PCOS, Grifola frondosa polysaccharide extracts show benefit in the management of PCOS itself, with one study reporting ovulation in 20 of 26 women given a G. frondosa polysaccharide extract, including 6 of 8 women who failed to ovulate after other treatments, and positive results in cases of PCOS-related infertility1.
It is possible that other mushrooms with benefits for insulin resistance such as Ganoderma lucidum and Cordyceps species may also be of benefit (3g/day).
1. Maitake mushroom (Grifola frondosa) extract induces ovulation in patients with Polycystic Ovary Syndrome: a possible monotherapy and a combination therapy after failure with first-line Clomiphene Citrate. Chen J, Tominaga K, Sato Y, Anzai H, Matsuoka R. J Alt Comp Med. 2010;16(12):1295–1299.