Research

Hormonal

Sleep disruption (fragmentation/continuity loss) causes increased sympathetic nervous system activity and HPA axis activation, leading to short-term stress responsivity and long-term cardiovascular disease risk.

Prioritize sleep continuity, not just duration. If you wake up frequently, your body experiences a stress response similar to being awake, increasing long-term risks for heart disease and high blood pressure. Focus on strategies to maintain uninterrupted sleep, such as managing environmental factors (light/noise) and addressing underlying sleep disorders like apnea.

GoodSupportsHIGH confidence
Sleep disruption is associated with increased activity of the sympathetic nervous system and hypothalamic–pituitary–adrenal axis... In otherwise healthy adults, short-term consequences of sleep disruption include increased stress responsivity... Long-term consequences of sleep disruption in otherwise healthy individuals include hypertension, dyslipidemia, cardiovascular disease...
Goran Medić et al. · Nature and Science of Sleep · 2017

Why this rating

Based on a nonsystematic review of 97 references, including prospective cohort studies and meta-analyses showing significant relative risks for hypertension and CVD.

Source

Short- and long-term health consequences of sleep disruption

Goran Medić et al. · Nature and Science of Sleep · 2017

DOI 10.2147/nss.s134864

narrative_reviewCited 1,716×
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DOI resolved against Crossref · corpus check 2026-06-10

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