related: pubmed 2024 Feb 28.:

"Creatine supplementation for optimization of physical function in the patient at risk of functional disability: A systematic review and meta-analysis"

https://news.ycombinator.com/item?id=40860478

> Creatine supplementation enhanced measures of memory performance in healthy individuals, especially in older adults (66–76 years).

Of course, it remains unknown if natural dietary improvements could have a similar effect without the need to use a chemical supplement where the long-term effects aren't well studied.

I could not get through to the letters that questioned the meta-analysis. Did anybody have a summary of that?

Meta-analysis of creatine supplementation on “measures of memory” with particularly strong effects in the older cases. No effects in the youngest cases.