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Related Experiment Videos

Menopause: an evolutionary perspective

S N Austad1

  • 1Department of Biological Sciences, University of Idaho, Moscow 83843.

Experimental Gerontology
|May 1, 1994
PubMed
Summary
This summary is machine-generated.

Menopause theories are adaptive or nonadaptive. Current evidence suggests menopause may not be adaptive, but studying Paleolithic lifestyles could reveal its physiological effects.

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Area of Science:

  • Evolutionary biology
  • Anthropology
  • Human physiology

Background:

  • Theories on menopause classify it as either adaptive (selective advantage) or nonadaptive (artifact of increased longevity).
  • Most mammals do not exhibit natural reproductive cessation; pilot whales are a possible exception.
  • Demonstrating adaptive menopause requires evidence of preagricultural human longevity and postreproductive females aiding descendants.

Purpose of the Study:

  • To evaluate the adaptive menopause hypothesis.
  • To investigate the potential benefits of menopause in preagricultural human populations.
  • To explore the impact of Paleolithic-era conditions on menopause symptoms.

Main Methods:

  • Reviewing evolutionary biology theories on menopause.

Related Experiment Videos

  • Analyzing data on preagricultural human longevity.
  • Evaluating evolutionary models with data from modern human populations.
  • Proposing research into Paleolithic-mimicking dietary, exercise, and hormonal regimes.

    • Main Results:

    • Data on preagricultural human longevity are inconclusive regarding the menopause hypothesis.
    • Evolutionary models suggest postreproductive females cannot sufficiently offset the cost of ceased reproduction by aiding descendants.
    • No mammals commonly exhibit reproductive cessation, challenging the adaptive hypothesis.

    Conclusions:

    • The adaptive menopause hypothesis lacks strong current support from evolutionary models and mammalian data.
    • Further research is warranted to explore menopause under conditions mimicking the late Paleolithic era.
    • Investigating the effects of Paleolithic-mimicking lifestyles on menopause symptoms may offer new insights.