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Related Experiment Videos

Hormones and sexual orientation: a questionable link

A Banks1, N K Gartrell

  • 1Harvard Medical School, MA, USA.

Journal of Homosexuality
|January 1, 1995
PubMed
Summary

This review finds no strong evidence linking sex hormones to sexual orientation. Studies on adult hormone levels and prenatal androgenization do not support a causal connection in humans.

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Area of Science:

  • Endocrinology
  • Neuroscience
  • Human Sexuality

Background:

  • The relationship between sex hormones and sexual orientation is a complex and debated topic.
  • Previous research has explored both postnatal and prenatal hormone influences.

Purpose of the Study:

  • To critically review existing studies on the potential causal link between sex hormones and the development of sexual orientation.
  • To evaluate the evidence for hormonal influences on human sexual orientation.

Main Methods:

  • Review of studies measuring adult hormone levels in relation to sexual orientation.
  • Analysis of research on prenatal hormone exposure and brain androgenization, including animal models.
  • Examination of studies on individuals with hormone metabolism defects (e.g., congenital adrenal hyperplasia, testicular feminization).

Main Results:

  • Studies on adult hormone levels generally do not support a causal relationship with sexual orientation.
  • Evidence from animal models on prenatal androgenization is difficult to generalize to humans.
  • Studies of individuals with hormone metabolism disorders did not show a higher incidence of homosexual behavior.

Conclusions:

  • Current data do not support a causal connection between sex hormones (postnatal or prenatal) and human sexual orientation.
  • Methodological limitations in early studies and challenges in generalizing animal findings complicate definitive conclusions.

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