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No evidence for association between human body odor quality and immune system functioning
Dagmar Schwambergová1, Agnieszka Sorokowska2, Žaneta Slámová3
1Department of Zoology, Faculty of Science, Charles University, Viničná 7, 128 44 Prague, Czech Republic; National Institute of Mental Health, Topolová 748, 250 67 Klecany, Czech Republic.
Psychoneuroendocrinology
|August 3, 2021
Summary
Body odor does not appear to signal immune system health. Studies found no link between scent perception and immune markers like antibodies or lymphocyte counts, suggesting scent doesn't indicate immune reactivity.
Area of Science:
- Evolutionary biology
- Human behavior
- Immunology
Background:
- Previous research indicates facial attractiveness correlates with immune reactivity in males.
- The role of body odor as a cue to immune function remains unexplored.
Purpose of the Study:
- To investigate the relationship between body odor quality and immune system reactivity.
- To determine if body odor signals immune system function in humans.
Main Methods:
- Study 1: Collected body odor samples from vaccinated men, measuring antibody levels and assessing odor attractiveness.
- Study 2: Collected body odor and blood samples from men and women, assessing immune parameters and odor attractiveness.
- Odor samples were rated for attractiveness, intensity, and healthiness by female and mixed-gender raters.
Main Results:
- No significant association was found between antibody levels post-vaccination and perceived body odor attractiveness, intensity, or healthiness in Study 1.
- No significant relationship was observed between basal immune system parameters (innate and adaptive immunity) and body odor quality in Study 2.
- Hormonal levels (testosterone and cortisol) did not correlate with antibody levels or odor perception.
Conclusions:
- Body odor does not appear to serve as a reliable cue to the reactivity or function of the human immune system.
- The findings suggest that olfactory cues may not play a significant role in assessing immune health in potential mates.
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