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High-Accuracy Correction of 3D Chromatic Shifts in the Age of Super-Resolution Biological Imaging Using Chromagnon
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Rotating night shift work and menopausal age.

D Stock1, J A Knight2,3, J Raboud3,4

  • 1Community Health and Epidemiology, Dalhousie University, Halifax, Nova Scotia, Canada.

Human Reproduction (Oxford, England)
|February 13, 2019
PubMed
Summary
This summary is machine-generated.

Rotating night shifts may modestly accelerate menopause. Women working frequent rotating night shifts experienced earlier menopause, particularly those predisposed to it.

Keywords:
circadian disruptionfertilitymenopauseovulationrotating night workshift schedules

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Area of Science:

  • Reproductive Endocrinology
  • Occupational Health
  • Epidemiology

Background:

  • Younger age at menopause is linked to adverse health outcomes.
  • Night work is associated with reproductive dysfunction and menstrual cycle disruption.

Purpose of the Study:

  • To investigate the association between rotating night shift schedules and age at natural menopause.
  • To analyze the impact of cumulative and current rotating night shift work on menopausal timing.

Main Methods:

  • A large national cohort study of 80,840 nurses (Nurses' Health Study 2) with prospective follow-up (1991-2013).
  • Cox proportional hazards models were used to estimate hazard ratios for menopause, adjusted for various lifestyle and reproductive factors.

Main Results:

  • Women working 20+ months of rotating night shifts in the prior 2 years had a higher risk of earlier menopause (aHR=1.09).
  • This association was stronger for women reaching menopause under age 45 (aHR=1.25).
  • 10+ years of cumulative rotating night work also increased the risk of early menopause (<45 years).

Conclusions:

  • Frequent rotating night shift work may modestly accelerate reproductive senescence.
  • Women predisposed to earlier menopause may further reduce their reproductive lifespan with rotating night shifts.