Losing weight during marathon training raises a runner's risk of injury.
See the scientific wording
Among adult marathon runners, actively losing weight during marathon training increases the risk of injury compared with not actively losing weight; no effect size, relative risk, or absolute risk was reported.
Not tested yet
ObservationalNo study measured the main part of this claim. No part of this claim has been tested yet.
Not tested yet
No study measured the main part of this claim. No part of this claim has been tested yet.
Parts of this claim
Active weight loss during marathon training increases the risk of injury.
Not testedNo studies
Evidence is judged against each part on its own, so a study that tests one part never counts as a verdict on the whole claim.
What the research says
1 study reviewedSupporting (1)
Cross-Sectional StudyHuman2023
The study found that male runners who eat too little for their exercise have weaker bones, which could make injuries more likely. But it didn't directly test whether losing weight during marathon training causes injuries, so it only hints at that idea.
Contradicting (0)
No contradicting studies found yet
That doesn't mean it's settled — it just means no study has tested the opposite.
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Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting study
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