Lifting is linked to a longer life. You need less than you think.

Meta-analysis of cohort studies. 263,058 people. 16 studies (published 2012-2020; each with at least 2 years of follow-up; longest median follow-up 25.2 years).

Many studies, added up. People were watched, not told what to do. A clue, not proof.

Who: Adults aged 18+ without severe health conditions at baseline (ages 18 to 97.8), mostly from the USA (also England/Scotland, Australia, Japan). n = 263,058 participants / 42,133 deaths in the any-vs-none all-cause mortality analysis (7 studies); the paper gives no single total across all 16 studies. Individual studies ranged from 3,809 to 479,856 participants.

• Any lifting vs none-15%
• Lifting + cardio vs neither-40%
• Lowest risk at40 min/week

More to know, from our read of the paper:

• Observational cohort studies only: association, not causation; authors cite possible residual, unknown and unmeasured confounding
• Strength training was self-reported (13 studies questionnaire) or by interview (3 studies), never objectively measured
• Certainty of evidence (GRADE) rated 'very low' for all-cause mortality, CVD and total cancer, and 'low' for diabetes
• Small number of studies (7 or fewer per outcome); publication bias could not be tested, so pooled estimates 'might have been overestimated'
• High heterogeneity (I2 83% all-cause, 73% CVD, 76% total cancer)

A meta-analysis of 16 cohort studies of adults, with strength training self-reported. Any muscle-strengthening activity was linked to 15% lower risk of death vs none (7 studies, 263,058 people). Risk was lowest at about 40 minutes a week; beyond that the benefit didn't clearly grow, and past ~2 hours a week the data are unclear (not shown to be harmful). Strength plus aerobic exercise vs neither: 40% lower. Observational, very low certainty of evidence: linked, not proven.

We read the abstract and the full text of this paper and checked every number on this page against it (16 facts, checked on 2026-09-27). The study design is named above. Cohort and other observational studies are described as linked, not proven. Found an error? Email theis@onestudyaday.com.