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the claim

Daytime napping increases the risk of heart attack.

the verdict
INSUFFICIENT LEANING
Recorded sources
3 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that Daytime napping increases the risk of heart attack?

Unclear. Several meta-analyses and cohort studies associate prolonged daytime napping (roughly 60 minutes or more) with higher cardiovascular or coronary heart disease risk, while shorter naps show no such association. The evidence covers only long naps and specific populations, not daytime napping in general.

Verdict: PARTIAL LEAN · 3 sources for, 0 against · Last checked

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Evidence for · 3
Daytime Napping and the Risk of Cardiovascular Disease and All-Cause Mortality: A Prospective Study and Dose-Response Meta-Analysis
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Daytime Napping and the Risk of Cardiovascular Disease and All-Cause Mortality: A Prospective Study and Dose-Response Meta-Analysis. (n.d.). cir.nii.ac.jp. https://doi.org/10.5665/sleep.5246

2 recorded entries grouped as this source

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Daytime Napping and the Risk of Cardiovascular Disease and All-Cause Mortality: A Prospective Study and Dose-Response Meta-Analysis -
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Daytime Napping and the Risk of Cardiovascular Disease and All-Cause Mortality: A Prospective Study and Dose-Response Meta-Analysis - PMC Lock. (n.d.). pmc.ncbi.nlm.nih.gov. https://doi.org/10.5665/sleep.5246

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More for · 2
Multiple Health Outcomes of Daytime Napping: A Comprehensive Umbrella Review.
2026
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P, D., J, L., Z, H., Y, S., S, S., Y, L., S, C., & X, L. (2026). Multiple Health Outcomes of Daytime Napping: A Comprehensive Umbrella Review.. doi.org. https://doi.org/10.3389/phrs.2026.1609013

Self-reported sleep duration and napping, cardiac risk factors and markers of subclinical vascular disease: cross-sectional study in older men
2017
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Zonoozi, S., Ramsay, S. E., Papacosta, O., Lennon, L., Ellins, E., Halcox, J., Whincup, P., & Wannamethee, S. (2017). Self-reported sleep duration and napping, cardiac risk factors and markers of subclinical vascular disease: cross-sectional study in older men. doi.org. https://doi.org/10.1136/bmjopen-2017-016396

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