Why That New “Science-Backed” Supplement Probably Doesn’t Work

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I used to have a stock comeback to people who’d ask me to write an article about the amazing endurance-enhancing properties of eye of newt or toe of frog or whatever. “Send me the results of a peer-reviewed, randomized, double-blinded trial,” I’d say, “and I’d be happy to write about it.” But then they started to call my bluff. In much the same way that everything in your fridge both causes and prevents cancer, there’s a study out there somewhere proving that everything boosts endurance.

A new preprint (a journal article that hasn’t yet been peer-reviewed, ironically) from

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