Evidence hierarchy
Animal, observational and randomized human evidence answer different questions.
Health Guide
Longevity
Separate useful healthy-aging evidence from anti-aging marketing.
Last reviewed: September 13, 2026Prevention
Established preventive care and healthy behaviors deserve attention alongside emerging longevity research.
Uncertainty
Promising research is not the same as a proven human lifespan intervention.
Educational information only. Individual screening, exercise, testing and treatment decisions should be discussed with a qualified healthcare professional.