Bryan Johnson· Author
Muscle Strength Predicts Longevity: A study (Warbutron, et. al., 2006) of over 1 million men found that low muscular strength in adolescence was associated with up to a 35% increased risk of dying young.
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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.
Muscle Strength Predicts Longevity: A study (Warbutron, et. al., 2006) of over 1 million men found that low muscular strength in adolescence was associated with up to a 35% increased risk of dying young.
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A 2012 BMJ cohort study of ~1.1 million Swedish adolescent males showed that those in the weakest third for muscular strength had about a 20–35 % higher risk of premature death (before age 55) compared with the strongest third, independent of BMI and aerobic fitness.