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Insufficient sleep refers to not getting the recommended amount of sleep for optimal functioning, even if it's just slightly less than needed. Sleep insufficiency may occur due to lifestyle choices, such as staying up late for social events or work, resulting in routinely getting less sleep than required. For example, consistently sleeping 6 hours when the body needs 7-9 hours can lead to cumulative effects on health and well-being.
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Updated: Sep 26, 2025

Measuring Frailty in HIV-infected Individuals. Identification of Frail Patients is the First Step to Amelioration and Reversal of Frailty
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Sleep Duration and Frailty Risk among Older Adults: Evidence from a Retrospective, Population-Based Cohort Study.

S Chen1, Y Wang, Z Wang

  • 1Qi Lu, MD, School of Nursing, Tianjin Medical University, Tianjin, 300070, China. Tel:86-23542855. Email address: luqi8674866@hotmail.com; Yue Zhao, PhD, Professor, School of Nursing, Tianjin Medical University, Tianjin, 300070, China. Tel:86-23542855. Email address: yuezhao35@hotmail.com.

The Journal of Nutrition, Health & Aging
|April 22, 2022
PubMed
Summary

Long sleep duration significantly increases frailty risk in older adults. This study highlights the importance of sleep quality interventions for preventing frailty in the elderly population.

Keywords:
Cohort studyfrailtyolder adultsrisk factorssleep duration

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Area of Science:

  • Gerontology
  • Sleep Medicine
  • Public Health

Background:

  • Frailty and sleep disturbances are common in older adults.
  • These conditions often coexist, suggesting a potential link.

Purpose of the Study:

  • To investigate the prospective association between sleep duration and the risk of developing frailty.
  • To analyze this relationship in a large, nationally representative cohort of Chinese older adults.

Main Methods:

  • A 10-year prospective cohort study involving 7623 older adults (≥65 years) without baseline frailty.
  • Participants were categorized by sleep duration: short (≤6 hours), middle (>6 to <10 hours), and long (≥10 hours).
  • Frailty was assessed using a 38-item frailty index; statistical analyses included Cox proportional hazard, competing risk, and generalized estimating equation (GEE) models.

Main Results:

  • Over a median follow-up of 4.4 years, 33.2% of participants developed frailty.
  • Long sleep duration (≥10 hours) was significantly associated with an increased risk of frailty (HR 1.26, 95% CI 1.14-1.38) compared to middle sleep duration.
  • Short sleep duration showed no significant association with frailty risk.

Conclusions:

  • Prolonged sleep duration is a significant risk factor for frailty incidence in older adults, independent of other factors.
  • Findings support the integration of sleep quality improvement into healthcare programs aimed at frailty prevention.