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Related Experiment Videos

[Is baldness a thermoregulatory adaptive process?].

M Cabanac, H Brinnel, C Mallet

    Comptes Rendus De L'Academie Des Sciences. Serie III, Sciences De La Vie
    |January 1, 1984
    PubMed
    Summary
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    Baldness may be an adaptive thermoregulatory process. Studies show bald skin sweats more than hairy skin, suggesting a role in heat dissipation for men with less body hair.

    Area of Science:

    • Human physiology
    • Thermoregulation
    • Dermatology

    Context:

    • Investigating physiological differences between bearded and glabrous skin areas.
    • Examining sweat rates in relation to hair coverage on the scalp.
    • Exploring potential adaptive mechanisms in human physical traits.

    Purpose:

    • To compare the surface area of bearded skin to glabrous skin in adult men.
    • To measure and compare sweat rates on the forehead and calvaria between bald and hairy individuals during mild hyperthermia.
    • To propose a hypothesis regarding baldness as a thermoregulatory adaptation.

    Summary:

    • Forehead area was found to be proportional to bearded area in 100 adult men.
    • Bald scalp skin exhibited more than double the sweat rate of hairy scalp skin in 10 subjects during mild hyperthermia.

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  • These findings support the hypothesis that male pattern baldness may be an adaptive thermoregulatory process.

    • Impact:

    • Provides novel insights into the potential evolutionary and physiological significance of baldness.
    • Suggests a functional role for reduced scalp hair in heat dissipation.
    • Opens avenues for further research into human adaptation and thermoregulation.