A large UK Biobank study followed over 72,000 participants for about seven years using wearables to see if higher daily step counts can offset health risks from prolonged sitting.

Participants averaged about 6,222 steps per day, with the bottom 5% around 2,200 steps daily used as the baseline for comparison.

The research is observational and cannot prove causation, and results may be influenced by unmeasured confounding factors or single-time-point measurements of steps and sedentary time.

Increasing daily steps up to roughly 10,000 was associated with a 39% reduction in death risk and a 21% reduction in cardiovascular disease risk, with benefits seen irrespective of sedentary time.

The authors caution that more movement should complement, not replace, other healthy behaviors, and they reinforce device-based activity guidelines that include daily stepping targets.

The strongest risk reductions appeared at 9,000–10,000 steps per day, but meaningful benefits were evident as low as about 4,000–4,500 steps, suggesting a dose-response relationship.

Step and sedentary data were collected via wrist accelerometers worn for seven days, and health outcomes were tracked through hospital records and death registries.