Research

Hormonal

Usual sleep duration deviating from 7 to less than 8 hours per night is associated with an increased prevalence of hypertension, with the strongest association observed in individuals sleeping less than 6 hours per night.

Aim for 7 to 8 hours of sleep per night to support healthy blood pressure. Both sleeping less than 6 hours and more than 9 hours is associated with higher odds of hypertension. While this study is observational, the consistency of findings suggests that maintaining a consistent, adequate sleep duration is a key non-pharmacologic strategy for cardiovascular health.

ModerateSupportsMEDIUM confidence
Usual sleep duration above or below the median of 7 to less than 8 hours per night is associated with an increased prevalence of hypertension, particularly at the extreme of less than 6 hours per night.
Daniel J. Gottlieb et al. · SLEEP · 2006

Why this rating

Large community-based cohort (n=5910) with rigorous adjustment for confounders, but cross-sectional design limits causal inference.

Source

Association of Usual Sleep Duration With Hypertension: The Sleep Heart Health Study

Daniel J. Gottlieb et al. · SLEEP · 2006

DOI 10.1093/sleep/29.8.1009

cross_sectional · n=5910Cited 939×
Read the paper
DOI resolved against Crossref · corpus check 2026-06-10

This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →