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This week's study · 5-min read
8,000steps · day⁻¹

Daily step count where all-cause mortality risk levels off — largely a effect.

Paluch et al., 2022 · Lancet Public Health
TL;DR

A meta-analysis of 15 cohort studies with 47,000 adults found that all-cause mortality dropped steeply as daily steps rose from very low levels, then flattened between 6,000 and 8,000 steps in older adults and 8,000–10,000 in younger adults.

What the researchers did

Paluch and colleagues pooled objective step-count data from 15 international cohorts, then modelled mortality risk across the full range of step volumes with a median follow-up of just over 7 years.

The key finding

The dose–response was non-linear. Going from ~3,500 to 7,000 steps cut mortality risk by ~50%. Above 8,000 steps in older adults (and ~10,000 in under-60s), the curve plateaued — more steps did not deliver much further benefit.

Why it matters

Most of this effect is non-exercise activity thermogenesis. Ordinary daily movement changes your energy expenditure, insulin sensitivity, and cardiovascular risk profile far more than a single gym session.

Takeaway

Aim for 8,000 steps most days. You do not need 10k to get 90% of the mortality benefit.

The study
Daily steps and all-cause mortality: a meta-analysis of 15 international cohorts
Paluch et al., 2022 · Lancet Public Health
View the full paper