People who take a lot of naps during the day might be more likely to develop heart problems, even if they sleep well at night and aren’t overweight—this could mean their sleep isn’t restful or their heart is under extra stress.

39

Pro

0

Against

Evidence from Studies

Supporting (1)

39

Community contributions welcome

39

Causal association between sleep duration, daytime napping, sleep disorders and ischemic heart disease: A systematic review and meta‑analysis of Mendelian randomization studies

Systematic Review With Meta-Analysis

Human

2025 Dec

This study found that people who nap during the day have a 63% higher chance of getting heart disease, even when you account for how much they sleep at night — which matches what the claim says.

Contradicting (0)

0

Community contributions welcome

No contradicting evidence found

Gold Standard Evidence Needed

According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Source Study

Causal association between sleep duration, daytime napping, sleep disorders and ischemic heart disease: A systematic review and meta‑analysis of Mendelian randomization studies

Score: 39

DOI: 10.1016/j.ijcha.2025.101811

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0

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