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Systematic review

Review of 48 pooled reviews: more steps linked to lower death risk, rated suggestive

Rahmati and colleagues · Journal of cachexia, sarcopenia and muscle · 2025

Original title: Associations Between Exercise Training, Physical Activity, Sedentary Behaviour and Mortality: An Umbrella Review of Meta-Analyses.

Under review. A person has not yet checked this summary against the paper. It is written from the PubMed abstract. Until a person checks it, search engines are asked not to list this page.

What the study found

Points to benefit

Device-measured daily steps went with lower death from any cause (eHR = 0.44). The review rated this evidence as suggestive, not convincing.

The study at a glance

Type of study
Systematic review
Who or what was studied
48 studies · Adults in 48 earlier meta-analyses on exercise, activity and sitting
What was tested
Reviewed earlier meta-analyses linking exercise, activity, sitting and death; steps were one measure
What it measured
The question itself: death from any cause
Who has a stake
No stake declared
The authors declare no conflicts of interest.
Journal
Journal of cachexia, sarcopenia and muscle, 2025
Source
PubMed record 40042073. This page is based on the abstract only.

How much this study counts

  • •Sums up 48 studies found with a set search method, without pooling the numbers.
  • ✓Measured the question itself: death from any cause.
  • ✓No competing interests declared.
  • •Summarized from the PubMed abstract only. The full paper may hold details the abstract leaves out.

✓ Strength– Limit• Note

These points come from fixed rules about the type of study, its size and length, what it measured, and who has a stake. Every study on Digestery gets the same rules.

Where this study sits

This paper is not on the ladder. It is a systematic review, and reviews and opinion pieces discuss studies that are already counted on the steps below.

↑ Stronger evidence

  1. Trials in people: death from any cause

    0

    Not done yet. This is the step that would answer the question.

  2. Trials in people: other measures

    0

    None among the papers we read.

  3. Trials in people: lab tests or safety

    0

    None among the papers we read.

  4. Population studies

    10

    9 benefit, 1 no difference

  5. Blood levels and genes

    0

    None among the papers we read.

↓ Weaker evidence

  • Points to benefit
  • Mixed
  • No difference
  • No direction
  • Points to harm

How it fits with the other research

The short answer to “How many steps a day lower the risk of early death?”

About 6,000 to 10,000 steps; fewer if older.

Confidence: low. Based on 17 on-topic papers.

Read the full answer
  • Part of the finding “More steps went with fewer deaths”.
  • Part of the finding “Some reviews found no clear ceiling”.
  • Summed up in “What reviews found”: Umbrella review of earlier meta-analyses on activity, sitting and death. Device-measured daily steps went with lower death from any cause (eHR = 0.44, range 0.35-0.56). It rated this evidence suggestive; none reached convincing.
  • Open item for a person: Rahmati 2025 abstract says 'Frothy-eight' meta-analyses; read as 48. Check the typo.

Other reviews on this question

See all 17 studies on this question

How this page was made

Label

First read of the abstract
Claude Sonnet
Independent second read
Claude Haiku
Differences settled
The two reads agreed on every checked field. Claude Opus 5.5.
Headline
Claude Sonnet, from the checked study record. A script checked its numbers and wording.
Numbers
Checked against the abstract by a script
“How much this study counts”
Fixed rules, the same for every study
Source check by a person
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