Does strength training lower the risk of death?

Answered November 2, 20265 sources

EvidenceBModerateGood evidence in people with one real weakness. New studies could change the answer.

Yes. People who lift weights or do other strength training have about 15% to 20% lower risk of death than people who don't. The best gains come at about an hour a week.

Who it's for
Healthy adults; not shown to lower death risk after a stroke.
What to expect
About 15% lower death risk, with most benefit near 60 minutes weekly.
Watch out for
These studies can't prove strength training itself causes the lower risk.
Strength training goes with a lower risk of death

Each dot is a result from a pooled analysis of studies, with a line showing the range it could plausibly fall in.

Strength training goes with a lower risk of death
ResultEstimate95% rangeReading
Any cause, strength training alone0.790.69 to 0.91Clear improvement
Any cause, with aerobic exercise0.60.49 to 0.72Clear improvement
Heart disease death0.830.67 to 1.03No clear difference

Source 3 Eur J Prev Cardiol, 2019

Pooled studies link strength training to fewer deaths

Each dot is a pooled result for a cause of death, with a line showing the range it could plausibly fall in.

Pooled studies link strength training to fewer deaths
ResultEstimate95% rangeReading
Any cause of death0.850.77 to 0.93Clear improvement
Heart disease death0.810.66 to 1No clear difference
Cancer death0.860.78 to 0.95Clear improvement

Source 2 Am J Prev Med, 2022

Figure 2. Two-group meta-analysis of the associations between no versus any muscle-strengthening activities and all-cause mortality, cardiovascular disease (CVD), total cancer and diabetes.

Figure 2 from Muscle-strengthening activities are associated with lower risk and mortality in…, Br J Sports Med 2022. Licence: CC BY 4.0

Figure 3. Linear dose–response meta-analysis of the associations between muscle-strengthening activities (per 10 min/week increase) and all-cause mortality, cardiovascular disease (CVD),…

Figure 3 from Muscle-strengthening activities are associated with lower risk and mortality in…, Br J Sports Med 2022. Licence: CC BY 4.0

What guidelines say

The WHO guidelines recommend that adults do muscle-strengthening activities on at least 2 days a week1.

What the studies show

  • A review that pooled 10 studies of adults found that any resistance training was linked to a 15% lower risk of death from any cause than no training. Heart disease death was 19% lower and cancer death 14% lower2. The heart disease result is borderline and could be down to chance2.
  • The same review found the biggest drop, 27%, at about 60 minutes a week. Benefits shrank at higher amounts2.
  • A review of 16 studies of healthy adults found a 10% to 17% lower risk of death from any cause, heart disease, cancer and diabetes. The most benefit, about 10% to 20%, came at 30 to 60 minutes a week. Whether more time adds benefit is unclear1.
  • A review of 11 studies (10 followed people, 1 was a trial) covering 370,256 people for about 9 years found a 21% lower risk of death with resistance training alone. Combined with aerobic exercise it was 40% lower. No clear link to cancer death was seen3.
  • These figures compare groups of people. How much one person gains depends on how high their risk was to begin with.
  • A review of 27 trials in 1,004 stroke survivors found strength training neither raised nor lowered deaths. Trials were short, and the certainty was high5.
  • A trial of 124 people after hip fracture tested 12 months of heavy weight lifting plus a broad care program. Deaths were 4 versus 8, with an 81% lower relative risk How much more or less likely something is in one group than another, as a ratio. A big relative change can still be a small change for any one person.. Numbers were tiny and the result can't be credited to lifting alone4.

Key studies

StudyWhoWhat it found
Review of 10 studies, 20222Healthy adults15% lower death risk; 27% at about 60 minutes weekly
Review of 16 studies, 20221Healthy adults10% to 17% lower risk of death from any cause
Review of 11 studies, 20193370,256 adults21% lower risk; 40% with aerobic exercise
Review of 27 trials, 202551,004 stroke survivorsNo change in deaths
Trial, 20124124 after hip fractureFewer deaths, but very small numbers

Safety

In stroke survivors, resistance training caused no serious side effects, though it may not suit everyone5.

What we don't know

  • Whether strength training itself lowers death risk, since people who lift may differ in other healthy habits.
  • Whether more than about an hour a week adds benefit or fades.

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Written by AI from the studies listed, without review by a clinician, and graded with the GRADE method. It can be wrong, so check the studies it cites. Education, not medical advice.