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The large number of hypothetical neuro-endocrine mechanisms that must be considered in the search for an explanation of homosexuality makes it unlikely that a single mechanism underlies all forms of homosexuality. More recently, a theory that prenatal hormone levels produce varying degrees of brain androgenization and subsequent dimorphic sex role behavior has consistently been supported by studies in lower mammals. The evidence from intersex patients as well as from the offspring of hormone treated pregnancies, suggests that prenatal hormones contribute to, but do not actually determine, the development of sexual orientation in individuals with abnormal sex hormone histories. This paper critically reviews the studies which explore a possible causal relationship between sex hormones and the development of sexual orientation. Likewise, among sexual minority women compared to age-matched heterosexual controls, studies have reported lower estrogen Loraine et al.

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More recently, a theory that prenatal hormone levels produce varying degrees of brain androgenization and subsequent dimorphic sex role behavior has consistently been supported by studies in lower mammals.

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Gonadotropin, estradiol, and testosterone profiles in homosexual men.

Significantly lower free plasma testosterone was observed in 35 homosexual males It also discusses various options for future research in the light of new developments in general and behavioral endocrinology. This study assessed sexual orientation and psychobiological stress indices in relation to salivary sex hormones as part of a well-validated laboratory-based stress paradigm. Overall, the data do not support a causal connection between hormones and human sexual orientation. Hormones and Sexual Differentiation of the Brain. Results of such studies must be viewed with caution, and over-simplification as well as over-interpretation should be avoided. Most researchers use their institutional email address as their ResearchGate login.

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The large number of hypothetical neuro-endocrine mechanisms that must be considered in the search for an explanation of homosexuality makes it unlikely that a single mechanism underlies all forms of homosexuality. Testosterone levels are influenced by conditions that are partly controlled or initiated by the hormone itself, but also by circumstances beyond hormonal or individual control. Results of such studies must be viewed with caution, and over-simplification as well as over-interpretation should be avoided. Most researchers use their institutional email address as their ResearchGate login. Sex hormones vary according to sexual orientation for women and stress indices for both sexes. Different kinds of behaviour are not only subject to influence by environment, but also androgens can reinforce the particular kind of conduct and the behavioural impact can wield negative or positive feedback on testosterone secretion. Current Status and Future Options.

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