Key points from article :
The more mushrooms people ate, the better they performed in tests of thinking and processing.
Particularly noticeable in those who ate more than 300g (10.5oz) two portions a week.
Mild cognitive impairment (MCI) is not as serious as dementia.
MCI can make people forgetful, cause problems with language and locating objects.
A unique antioxidant present in mushrooms could have a protective effect on the brain.
Humans are unable to make on their own ergothioneine, which is also an anti-inflammatory.
Mushrooms also contain vitamin D, selenium and spermidine, which protect neurons from damage.
Research based on 663 Chinese adults, aged over 60, tracked from 2011 to 2017.
The study was published in Journal of Alzheimer's Disease.
