Research
Mixed
Long sleep duration is NOT significantly associated with incident hypertension, and evidence for depression and dyslipidemia is insufficient.
Do not assume that sleeping long hours will cause high blood pressure. This study found no significant link between long sleep and hypertension, unlike its links to heart disease and mortality.
GoodRefutesMEDIUM confidence
Long sleep was not significantly related to incident hypertension (1.01, 0.95 - 1.07). Insufficient data were available for depression and dyslipidemia.
Why this rating
Based on 8 datasets, which is fewer than other outcomes, but still a meta-analysis.
Source
Long sleep duration and health outcomes: A systematic review, meta-analysis and meta-regression
Maki Jike et al. · Sleep Medicine Reviews · 2017
DOI 10.1016/j.smrv.2017.06.011
Meta-analysis · 137 studiesCited 772×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
- Long sleep duration (defined as >8 or >9 hours depending on the study) is significantly associated with increased all-cause mortality and incident cardiovascular disease, stroke, diabetes, and obesity compared to normal sleep duration.Good
- There is a linear, dose-response relationship between longer sleep duration and increased mortality risk, with significant risk increasing at sleep durations >9.5 hours.Good
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