Do gay men have higher levels of testosterone
Evaluation of physical signs of prenatal testosterone exposure in homosexual men
Objective: In recent years, studies regarding the biological etiology of homosexuality have focused on the sexually dimorphic development of the brain during fetal life. Prenatal testosterone may play an important role for the differentiation of the brain and sexual orientation (1). Based on this view, homosexuality may be caused by inadequate testosterone levels during the development of the head. Moreover, prenatal testosterone levels are thought to masculinize 2nd to 4th finger length ratio (2D:4D) as well as other sexually dimorphic features. Women usually have a higher 2D:4D than men. Thus the aim of the offer study was to rate 2nd to 4th finger length ratio (2D:4D) that is claimed to indirectly reşect the effects of prenatal testosterone levels on brain in homosexual male individuals.
Methods: The study included 40 men aged 18-35 years, who defined themselves as homosexual and 40 men aged 18-34 years, who defined themselves as heterosexual. A personal questionnaire, which is developed by our group and committed some sociodemographic data of subjects, and Bem Sexual Role Inventory (
WHAT ARE SOME INDIVIDUALS Male lover WHILE OTHERS ARE NOT?
Since sexual orientation is a gendered trait, meaning that sexual orientation is a part of gender, current research on the maturation of sexual orientation is primarily focused on prenatal sex hormones. Based on animal studies, it is likely that the critical period for sex hormones in humans is pre-birth. Prenatal sex hormones are found to influence gender and gendered traits, so it is safe to assume it also influences sexual orientation.
While such studies have been conducted in animals, it is unethical to inject sex hormones into human fetuses in the uterus. So how do we know that sex hormones influence gender and sexual orientation in humans? Researchers study conditions that mimic the studies in conducted in rats. One such condition, called Congenital Adrenal Hyperplasia (CAH) which is a disorder that causes the adrenal gland to secrete excess testosterone during prenatal training in pregnant women. Children of these women with CAH are significantly more likely to be queer compared to the children of women without this condition.
Since sexual orientation is one aspect of gender, it can be assumed that human sexu
Homosexuality, one of the many different sexual behaviors exhibited by humankind, has been rejected, persecuted, and denied. Are the studies that attempt to find causation moral? Is this look for for the "why" of homosexuality a continuation of the heterosexist assumption that heterosexuality is normal and homosexuality abnormal? Are assumptions being made that homosexuality is a disease and should therefore be treated medically? Is the study currently being done heterosexist? Studies that are entity performed currently and those done in the recent past have shown that there are strong connections between male homosexuality and biology. By presenting the scientifically significant studies that I have come across, I intend to lower the ignorance surrounding homosexuality and the behaviors often found with it, and to show some of the correlations between biology and male homosexuality.
Throughout my research of homosexuality, I wavered back and forth, debating the morality of this search for a cause. It seemed that finding a lead to for homosexuality was somewhat akin to finding the cause for a disease. Unhappy with the association of homosexuality with abnormali
Brain responses differ in queer , straight men
The brains of homosexual men respond more like those of women when reacting to a chemical derived from the male sex hormone, modern evidence of physical differences related to sexual orientation.
The finding, published in Tuesday’s issue of Proceedings of the National Academy of Sciences, shows differences in physiological reaction to sex hormones.
Researchers led by Ivanka Savic at the Karolinska Institute in Stockholm, Sweden, exposed heterosexual men and women and homosexual men to chemicals derived from male and female sex hormones. These chemicals are thought to be pheromones, molecules known to set off responses such as defense and sex in many animals.
Whether humans respond to pheromones has been the subject of debate, although in 2000 American researchers reported finding a gene that they believe directs the human pheromone receptor in the nose.
Biological basis to sexual orientation?
In the Swedish study, when sniffing a chemical from testosterone, the male hormone, portions of the brains deeply interested in sexual activity were activated in gay men and straight women, but not in straight men, the researchers found.
When they sn
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