Source: What Doctors Don't Tell You online https://www.wddty.com/news/2019/03/two-servings-of-mushrooms-a-week-protect-against-memory-loss.html
Mushrooms can reduce the risk of breast cancer by 64 per cent—as WDDTY's March issue revealed—and they can also keep you mentally sharp as you get older.
Two servings a week reduce the risk of mild cognitive decline (MCI)—such as occasional memory loss or concentration lapses—by around 50 per cent. MCI is generally seen as early-stage dementia.
Although nobody is quite sure why mushrooms have such a therapeutic effect, researchers think it's to do with a compound called ergothioneine that is in most types of mushroom.
Researchers from the National University of Singapore tested various mushrooms—such as golden, oyster, shiitake and white button—on a group of 600 people aged 60 and older for six years.
The researchers tested the group on a range of cognitive, language and visuo-spatial skills after they had eaten different amounts, and types, of mushrooms.
They discovered the optimum amount for MCI protection was one serving, which equates to three-quarters of a cup of cooked mushrooms or 150 g, twice a week.
The mushrooms' protective effects were "surprising and encouraging", the researchers said.
(Source: Journal of Alzheimer's Disease, 2019; 1: doi: 10.3233/JAD-180959)