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Related Experiment Videos

Pituitary-gonadal function during sleep in healthy aging men.

R C Schiavi1, D White, J Mandeli

  • 1Department of Psychiatry, Mount Sinai School of Medicine, New York City, New York 10029.

Psychoneuroendocrinology
|November 1, 1992
PubMed
Summary

Healthy aging men experience reduced testosterone levels during sleep, linked to changes in sleep efficiency and architecture. These findings highlight the connection between sleep quality and hormonal health in older males.

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Area of Science:

  • Endocrinology
  • Sleep Medicine
  • Gerontology

Background:

  • Limited data exists on the interplay between aging pituitary-gonadal function and sleep in men.
  • Hormonal changes and sleep disturbances are common in older adults, but their relationship is not well understood.

Purpose of the Study:

  • To investigate age-related changes in pituitary-gonadal hormones (testosterone, LH, prolactin) during sleep in healthy older men.
  • To explore associations between sleep parameters (efficiency, REM latency, leg movements) and hormonal variations.
  • To examine the impact of sleep-disordered breathing on hormone levels in aging men.

Main Methods:

  • Cross-sectional study of 67 healthy men aged 45-75 years without sleep complaints.
  • Frequent blood sampling (every 20 min) during sleep to measure plasma testosterone, LH, and prolactin.

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  • Assessment of sleep parameters, including respiratory disturbances and periodic leg movements.

    • Main Results:

    • Bioavailable testosterone decreased with age, while Luteinizing Hormone (LH) increased.
    • No significant age-related changes were observed in total testosterone or prolactin levels.
    • Positive associations found between sleep efficiency, reduced REM latency, increased REM episodes, and circulating testosterone levels.
    • Sleep-disordered breathing prevalence increased with age; respiratory disturbances correlated with lower bioavailable testosterone, though this lost significance after age adjustment.

    Conclusions:

    • Aging in men is associated with diminished gonadal function during sleep.
    • Sleep efficiency and architecture alterations are linked to changes in gonadal activity in older men.
    • Further research is needed to elucidate the causal mechanisms and clinical implications.