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Correlations in sleeping patterns and circadian preference between spouses.

Rebecca C Richmond1,2, Laurence J Howe3,4, Karl Heilbron5,6

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Summary
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Spouses influence each other's sleep patterns. This study found correlations in sleep duration and diurnal preference, suggesting shared sleep behaviors and potential for family-based sleep interventions.

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Area of Science:

  • Behavioral Genetics
  • Sleep Science
  • Human Genetics

Background:

  • Spousal relationships can influence health behaviors.
  • Sleep is a fundamental biological process with significant health implications.
  • Understanding shared sleep behaviors can inform public health strategies.

Purpose of the Study:

  • To investigate the phenotypic and genetic correlations in sleep behaviors between spouses.
  • To examine the influence of one spouse's sleep characteristics on the other's.

Main Methods:

  • Analysis of large-scale datasets (UK Biobank, 23andMe) including self-reported and accelerometer-derived sleep data.
  • Phenotypic correlation analysis to assess associations between spouse sleep traits.
  • Mendelian randomization to infer causal relationships between sleep behaviors.

Main Results:

  • Weak positive correlation found for sleep duration (r=0.11) and weak inverse correlation for chronotype (r=-0.11) between spouses.
  • Accelerometer data confirmed similar correlations for sleep duration and showed a positive correlation for diurnal activity timing (r=0.24).
  • Mendelian randomization indicated that sleep duration, diurnal activity, chronotype, and snoring impact partners' sleep.

Conclusions:

  • Spouses' sleep behaviors are correlated, indicating a potential for mutual influence.
  • Findings support the concept of shared sleep environments impacting individual sleep.
  • This research highlights opportunities for family-centered sleep interventions.