Death Risk Stopped Falling Past a Modest Weekly Dose of Strength Training

CATEGORY: EXERCISE & MOVEMENT

Past about two hours of strength training a week, the death-risk curve went flat. It did not keep falling. In nearly 150,000 adults followed for up to 30 years, roughly 90 to 120 minutes a week was where the lowest risk of dying sat, and more lifting bought nothing beyond it.¹

Three Cohorts of Doctors and Nurses, 35,798 Deaths

Harvard pooled three long-running studies of doctors and nurses. Participants reported how much resistance training they did, meaning work against weights, machines or their own bodyweight, and deaths were recorded across the decades. Across 147,374 people followed for as long as 30 years, 35,798 died. That is the pool of events every comparison here is drawn from. Nobody was handed a training plan. The researchers watched what people already did, so this is a link rather than proof that lifting itself extends life. Three decades of follow-up and that many recorded deaths still make the pattern hard to wave away.¹

13% Lower Overall, 27% Lower From Neurological Disease

Set against doing none at all, about 90 to 119 minutes a week tracked with a 13 percent lower risk of death from any cause. Cardiovascular death, meaning death from heart or blood-vessel disease, ran 19 percent lower. Death from neurological disease such as dementia ran 27 percent lower. Above 120 minutes the line simply leveled. Cancer was the odd one out: there the lower risk showed up only in the smallest doses, roughly 1 to 60 minutes a week, and not above. The researchers are not certain why. What the pattern does suggest is that the best amount depends on which outcome you are asking about, and that the headline range is a plateau rather than a peak you have to hit exactly.

The Lowest Risk Belonged to People Who Did Both

Strength work paired with plenty of aerobic exercise came out lowest of all. Walking briskly, cycling and swimming load the heart and circulation; lifting builds muscle, supports metabolism and may protect the brain. The two do different jobs. Other research puts the peak lower down the curve. A pooled analysis of 16 studies linked the lowest risk to roughly 30 to 60 minutes of muscle-strengthening activity a week, about 10 to 20 percent lower risk of death, heart disease and cancer, with nothing clear gained above that.² A separate look at nearly 100,000 US adults tied weightlifting on its own to 9 percent lower death risk, and weightlifting plus aerobic activity to roughly 40 percent lower.³

Key Takeaways

• The lowest death risk sat at roughly 90 to 120 minutes of strength training a week, about three sessions of 30 to 40 minutes.
• Beyond about two hours a week the longevity link flattened; more was not tied to more.
• Cancer death was the exception, with lower risk showing up only at 1 to 60 minutes a week.
• People who combined lifting with regular aerobic exercise had the lowest risk of all.

References

1. Zhang Y, Lee DH, Rezende LFM, Ma Y, Giovannucci E. Long-term resistance training with all-cause and cause-specific mortality: assessing dose-response and joint associations with aerobic physical activity. Br J Sports Med. 2026 Jun;60(12):874-883. link
2. Momma H, Kawakami R, Honda T, et al. Muscle-strengthening activities are associated with lower risk and mortality in major non-communicable diseases: a systematic review and meta-analysis of cohort studies. British Journal of Sports Medicine. 2022;56(13):755–763. link.
3. Gorzelitz J, Trabert B, Katki HA, et al. Independent and joint associations of weightlifting and aerobic activity with all-cause, cardiovascular disease and cancer mortality in the Prostate, Lung, Colorectal and Ovarian Cancer Screening Trial. British Journal of Sports Medicine. 2022;56(22):1277–1283. link.