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Related Concept Videos

Menopause01:28

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Menopause, a natural biological process marking the end of a woman's fertility, typically occurs between the fifth and sixth decade of life. This phase is characterized by the exhaustion of the ovarian follicle pool, leading to less responsive ovaries despite the high levels of Follicle Stimulating Hormone (FSH) and Luteinizing Hormone (LH). The consequential decrease in estrogen production results in symptoms like hot flashes, heavy sweating, headaches, hair loss, muscle pains, vaginal...
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Circadian rhythms are cyclic changes that are crucial in plasma drug concentrations. Various standard circadian parameters, including core body temperature, heart rate, and other cardiovascular factors, directly impact disease states and the therapeutic response to drug therapy.
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Pharmacodynamics in Geriatric Patients: Effects of Age01:27

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Age-related pharmacokinetic changes are extensively documented, but understanding age-related pharmacodynamic alterations is relatively limited. This knowledge gap can be partly attributed to the complexity of developing appropriate measures of drug responses compared to bioanalytical methods for determining drug concentrations.Most information regarding age-related differences in human pharmacodynamics originates from cross-sectional studies. However, these studies assume that observed mean...
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Geriatric patients show significant variation in how their bodies process medications, which can change how effective and safe treatments are. The liver is the primary organ where drug metabolism occurs, involving two main types of chemical reactions: phase I and II. Phase I metabolism is driven by the cytochrome P450 enzyme system, which includes key types such as CYP3A, CYP2D6, and CYP2C9. Research indicates that while aging doesn't notably alter the levels or activity of these enzymes, it...
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A Method to Study the Impact of Chemically-induced Ovarian Failure on Exercise Capacity and Cardiac Adaptation in Mice
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Does night work affect age at which menopause occurs?

David Stock1,2, Eva Schernhammer3,4,5

  • 1Community Health and Epidemiology, Dalhousie University.

Current Opinion in Endocrinology, Diabetes, and Obesity
|October 24, 2019
PubMed
Summary
This summary is machine-generated.

Night shift work may increase the risk of earlier menopause, particularly in younger women. Further research is needed to understand the biological mechanisms behind this association.

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Area of Science:

  • Reproductive Endocrinology
  • Chronobiology
  • Occupational Health

Background:

  • Night shift work is increasingly prevalent globally.
  • Potential links between circadian disruption and reproductive health are under investigation.
  • Previous research suggests associations between night work and other health issues, such as breast cancer.

Purpose of the Study:

  • To review the existing evidence on the relationship between night shift work and the age of natural menopause.
  • To explore potential biological mechanisms linking night work to menopausal timing.
  • To highlight the need for further research in this area.

Main Methods:

  • Literature review focusing on observational studies.
  • Prioritization of population-based evidence.
  • Synthesis of findings related to night work, circadian rhythms, and reproductive function.

Main Results:

  • A single observational study suggests a moderately higher risk of earlier menopause for women in night shift work.
  • This risk appears more significant in younger women.
  • Evidence points to melatonin-mediated circadian disruption as a potential mechanism, with observed changes in hormone levels and menstrual patterns.

Conclusions:

  • Current evidence suggests night shift work may influence menopausal timing.
  • Circadian disruption, particularly 'Light at Night,' is a plausible biological pathway.
  • Further research is warranted to confirm these findings and elucidate underlying mechanisms, considering factors like chronotype.