Research briefs
You saw a headline, a supplement, a reel, a study someone quoted. You're about to buy it, repeat it, or ignore it, and you can't tell whether the study behind it holds.
Send me the claim. One line is enough.
Back within 24 hours: a decision, not a reading list. Holds / does not hold / cannot be told from the record, stated flatly, with the exact sentence or figure that decides it and a link you can open. Where the headline drifted from the paper, I name the drift. If the record cannot settle it, I say so and you do not pay.
What a check looks like (this one is mine, done this week):
Claim: metformin extends human lifespan.
Call: does not hold as usually stated. The 2014 paper found metformin patients outliving matched non-diabetics by 15% over under three years of follow-up. The 2023 twenty-year replication found them dying 18% sooner, with the early benefit gone by year four. The comparator in both is "not diagnosed with any form of diabetes," which lets undiagnosed diabetics sit in the control arm.
What survives: metformin beats sulphonylurea out to twenty years. What nobody has tested: metformin in people without diabetes with a mortality endpoint.
Sources: doi 10.1111/dom.12354 and doi 10.1186/s12889-023-15764-y.
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