I'm looking for preprints or journal-published papers that are, to my estimation, reasonably credible. Any medical professionals, researchers, or watchdogs are free to weigh in with "seems reasonable" or "seems sus."

I'm not looking for solid, hard proof; just something interesting or suggestive.

Papers should have numbers and some reasonable statistical analyses, not just speculation.

Anecdotes won't be considered. Documents that aren't preprints or journal-published papers might be enough to resolve the market if they seem similarly practically credible, especially if e.g. there are examples of doctors who are also science communicators (e.g. Science-Based Medicine) treating them as credibly interesting.