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Pheromones and Gay Men

Discussion in 'Health & Medicine Forum' started by plutosgirl, May 9, 2005.

  1. plutosgirl

    plutosgirl It's a Liopleurodon!!!

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    Gay Men Respond Differently to Pheromones


    May 9, 2005 07:54:53 PM PST


    Gay men's brains respond differently from those of heterosexual males when exposed to a sexual stimulus, researchers have found. The homosexual men's brains responded more like those of women when the men sniffed a chemical from the male hormone testosterone.

    "It is one more piece of evidence ... that is showing that sexual orientation is not all learned," said Sandra Witelson, an expert on brain anatomy and sexual orientation at the Michael G. DeGroote School of Medicine at McMaster University in Ontario, Canada.

    Witelson, who was not part of the research team, said the findings clearly show a biological involvement in sexual orientation.

    The study, published in Tuesday's issue of Proceedings of the National Academy of Sciences, was done by researchers at the Karolinska Institute in Stockholm, Sweden.

    They 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 trigger responses such as defense and sex in many animals.

    Whether humans respond to pheromones has been debated, although in 2000 American researchers reported finding a gene that they believe directs a human pheromone receptor in the nose.

    The Swedish study was one of a series looking at whether parts of the brain involved in reproduction differ in response to odors and pheromones, lead researcher Ivanka Savic said.

    The brains of different groups responded similarly to ordinary odors such as lavender, but differed in their response to the chemicals thought to be pheromones, Savic said.

    The Swedish researchers divided 36 subjects into three groups — heterosexual men, heterosexual women and homosexual men. They studied the brain response to sniffing the chemicals, using PET scans. All the subjects were healthy, unmedicated, right-handed and HIV negative.

    When they sniffed smells like cedar or lavender, all of the subjects' brains reacted only in the olfactory region that handles smells.

    But when confronted by a chemical from testosterone, the male hormone, portions of the brains active in sexual activity were activated in straight women and in gay men, but not in straight men, the researchers found.

    The response in gay men and straight women was concentrated in the hypothalamus with a maximum in the preoptic area that is active in hormonal and sensory responses necessary for sexual behavior, the researchers said.

    And when estrogen, the female hormone was used, there was only a response in the olfactory portion of the brains of straight women. Homosexual men had their primary response also in the olfactory area, with a very small reaction in the hypothalamus, while heterosexual men responded strongly in the reproductive region of the brain.

    Savic said the group is also doing a study involving homosexual women but those results are not yet complete.

    In a separate study looking at people's response to the body odors of others, researchers in Philadelphia found sharp differences between gay and straight men and women.

    "Our findings support the contention that gender preference has a biological component that is reflected in both the production of different body odors and in the perception of and response to body odors," said neuroscientist Charles Wysocki, who led the study.

    In particular, he said, finding differences in body odors between gay and straight individuals indicates a physical difference.

    It's hard to see how a simple choice to be gay or lesbian would influence the production of body odor, he said.

    Wysocki's team at the Monell Chemical Senses Center studied the response of 82 heterosexual and homosexual men and heterosexual and homosexual women to the odors of underarm sweat collected from 24 donors of varied gender and sexual orientation.

    They found that gay men differed from heterosexual men and women and from lesbian women, both in terms of which body odors gay men preferred and how their own body odors were regarded by the other groups.

    Gay men preferred odors from gay men, while odors from gay men were the least preferred by heterosexual men and women and by lesbian women in the study. Their findings, released Monday, are to be published in the journal Psychological Science in September.

    The Swedish research was funded by the Swedish Medical Research Council, the Karolinska Institute and the Magnus Bergvall Foundation. Wysocki's research was supported by the Monell Center.

    http://health.yahoo.com/news/61778
     
  2. Playa

    Playa The coach is a near

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    Do they sniff each others' butts like dogs?
     
  3. plutosgirl

    plutosgirl It's a Liopleurodon!!!

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    No more often than you and Dollface.
     
  4. builder

    builder membered member

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    I know a TON of gay men that love the smell of a man's armpits. There's just something animalistic about that smell that makes me want to hurt them, but in a good way. I remember the first guy I fell for. Every now and again I catch a whiff of that smell in a crowd and my dick jumps and my heart races hoping it's him.
     
  5. sadic1

    sadic1 Full Access Member

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    Pheromowned!
     
  6. Fred

    Fred .........

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    I hate that smell! It smells like a rotten hamburger that's been in a dumpster for 3 weeks.

    The only smell of a man that turns me on is a good strong soap! I ain't licking nothing that smells like a dumpster!
     
  7. gridfaniker

    gridfaniker Loathsome

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    does feces have the same effect?
     
  8. builder

    builder membered member

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    No. Thanks for playing.


    Fred, sorry you don't find it attractive. I do. Even there, we're different. But underneath it all, we can still smell the dick.
    :jump:
     
  9. Fred

    Fred .........

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    I love the smell of dick and ass - but CLEAN dick and ass!
     
  10. Puttingood

    Puttingood Sensitive One

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    I can smell a trailer park from a mile away.
     

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