Peter Attia is a physician whose framework reflects clinical training. In Outlive (2023) he consistently argues that the four most powerful longevity interventions are exercise, sleep, nutrition, and emotional health. Supplements occupy a small corner of his protocol — and he is openly skeptical of most of them.
The exercise framework
Attia targets 3–4 hours per week of zone 2 cardio and trains strength twice per week, with emphasis on grip strength, leg press, and posterior chain — the muscle groups most predictive of functional independence in later life.
The supplement stack
Attia's supplement list is short: omega-3 fatty acids (EPA+DHA, 2–4 g/day), vitamin D3 (5,000 IU/day with K2), magnesium (glycinate or L-threonate), and creatine monohydrate (5 g/day). He does not take NMN or resveratrol, citing insufficient human evidence.
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