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Related Experiment Videos

Energy regulation over the menstrual cycle

W G Johnson1, S A Corrigan, C R Lemmon

  • 1Department of Psychiatry and Human Behavior, University of Mississippi Medical Center, Jackson 39216-4505.

Physiology & Behavior
|September 1, 1994
PubMed
Summary

Women

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Area of Science:

  • Endocrinology
  • Nutritional Science
  • Reproductive Biology

Background:

  • Ovarian hormones significantly influence various physiological processes.
  • Understanding their role in energy regulation is crucial for women's health.
  • Menstrual cycle phases are associated with hormonal fluctuations.

Purpose of the Study:

  • To investigate the impact of ovarian hormones on energy intake and macronutrient distribution.
  • To explore how menstrual cycle phases affect dietary patterns in healthy women.

Main Methods:

  • Longitudinal study tracking food consumption and exercise over one menstrual cycle.
  • Measurement of serum ovarian hormone levels to define cycle phases (perimenstrual, follicular/ovulatory, luteal).
  • Analysis of energy intake, macronutrient composition, and energy expenditure.

Main Results:

  • Energy intake increased during the luteal phase compared to the follicular/ovulatory phase.
  • Fat intake increased by 2% during the luteal phase.
  • Hormonal changes, specifically the estrogen/progesterone ratio, appear linked to these dietary variations.

Conclusions:

  • Ovarian hormone fluctuations across the menstrual cycle influence energy and fat intake.
  • These changes are not explained by exercise or dietary restraint.
  • Estrogen and progesterone levels play a key role in modulating appetite and food choices.

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