Bryan Johnson· Author
The effect was mediated by the gut-bacteria with individuals showing a larger response (0.4 mmol/l reduction in fasting blood sugar) showing a distinct gut bacteria composition.
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The headline is broadly defensible, but the qualifications matter. Effect sizes vary by population, the strongest claims rest on shorter trials, and credible voices push back on how it's typically framed.
The effect was mediated by the gut-bacteria with individuals showing a larger response (0.4 mmol/l reduction in fasting blood sugar) showing a distinct gut bacteria composition.
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