> The National University of Singapore study's findings were based on 663 Chinese adults, aged over 60, whose diet and lifestyle were tracked from 2011 to 2017.

> The National University of Singapore study's findings were based on 663 Chinese adults, aged over 60, whose diet and lifestyle were tracked from 2011 to 2017. What concerns me is how many variables were tracked. Every year, come Superbowl Sunday, we hear about all the patterns: no team that had an under-32 coach from West of the Mississippi has ever won (I've no idea if that's true, but that's an example). The problem is that there's so many variables compared to data points that it's easy to find a pattern. 663 adults sounds like a lot of data, but this wasn't a study about mushrooms, it was tracking many different variables in diet and lifestyle. Maybe the mushroom pattern is random chance. There's also correlation vs causation. Perhaps mushrooms are eaten more in a region where mild brain decline is less common. Maybe mushrooms taste better to people with genes that also make brains not decline. All that said, as a guy who loves eating mushrooms I fully support further studies.