It’s a case report (n=1) that a group of 3 people from Brazil wrote up and pushed into the publishing world. The report is full of big words and tables, but barely says anything more than the abstract: It’s basically “an 80 year old Japanese women received mushrooms and was better afterward” expanded with as much medical jargon as they could apply without accidentally getting too specific. No mention of how the Alzheimer’s disease history was documented or diagnosed or even if she was a patient of one of the authors.
I’m surprised how much it’s getting people to let their guard down and accept the result. Normally when studies get posted with only 100 to 500 participants the comments everywhere are full of doubters calling out the small sample size. For some reason this n=1 story written vaguely about extraordinary claims with a complete absence of pre-treatment documentation or standardize testing/scoring hits all the right notes to convince a lot of people that mushrooms can reverse Alzheimer’s disease.
I know it’s something that a lot of people would like to be true, but this is a domain where anyone in the world can make any claims they want and find a journal who will publish it if you pay them. People write and publish papers like this all the time claiming to have treated major diseases in a single patient or group of patients with different drugs or herbs.