Bryan Johnson· Author
My personal dose of 25mg translates to 0.31 mg/kg daily, placing it at the lower end of this safe range.
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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.
My personal dose of 25mg translates to 0.31 mg/kg daily, placing it at the lower end of this safe range.
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a dose range of 0.25-4 mg/kg of body weight is considered safe.