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Is there a correlation between the sexual orientation of siblings?

Discussion in 'Family, Friends, and Relationships' started by unknown18, Apr 10, 2018.

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  1. unknown18

    unknown18
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    So, to put it straight, I found out that the sister of the guy I like is actually bisexual. Does this make there a higher likelihood of the person I love being gay/bisexual or even willing to be experimental based on the fact that his sister is sort of in that category?
     
    #1 unknown18, Apr 10, 2018
    Last edited: Apr 10, 2018
  2. Chip

    Chip
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    Anecdotally, info is mixed on that. Lots of stories of families of 4 or 5 children with one gay child, and other stories of families with 2 or 3 children, where both or all are gay. There does seem to be some indication that it may run in extended families (meaning, if you are gay, you are likely to have cousins or other relatives who are gay), but I haven't personally seen any studies that make any solid claims to that effect.
     
    #2 Chip, Apr 10, 2018
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  3. Humbly Me

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    Studies indicate a much higher probability of homosexuality in younger brothers with an older homosexual brother in particular.
     
    #3 Humbly Me, Apr 10, 2018
  4. Humbly Me

    Humbly Me
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    One thing we can probably assume is that he won't hate you for being gay, at least it seems that way since his sister is somewhat out.
     
    #4 Humbly Me, Apr 10, 2018
  5. unknown18

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    He doesn't, he already found out in the worst way possible. It's me that wants to find out about him now.
    :laughing:
     
    #5 unknown18, Apr 10, 2018
  6. Chip

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    I've read about that as well, and I forgot to mention that piece. The best theory I've heard is increasing estrogen levels in the womb of mothers after their second or third child. But I haven't seen anything that specifically points to clustering of LGBT kids in specific families, other than anecdotal reports.
     
    #6 Chip, Apr 11, 2018
  7. CuriousKitty16

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    My mom had 3 kids. Only 1 of them is straight, and it’s not me. LOL
     
    #7 CuriousKitty16, Apr 11, 2018
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  8. Biguy45

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    I have never heard of this, though I confess I don’t know many out people. As far as I know, my siblings are straight. Of course they think I am as well. So who knows
     
    #8 Biguy45, Apr 11, 2018
  9. Biguyjosh

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    I've heard that families with lots of kids have more than one who is gay or bi. And heard about twins being gay. Not sure the actual statistics or chances though. But me and my brother are bi and our cousin is gay. And I think another cousin is bi if not gay.
     
    #9 Biguyjosh, Apr 15, 2018
  10. Humbly Me

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    The most recent statistic I know for this was like 2001 in the David Meyers psych text book. It was ~ 30% of non identical twins where both where gay if one was, and ~ 50% for identical twins.
     
    #10 Humbly Me, Apr 15, 2018
  11. Destin

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    Well that's interesting. I have a twin - now this makes me wonder about him.
     
    #11 Destin, Apr 15, 2018
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  12. Caraldo

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    I know of a family wher both male children are gay. The female child is straight as far as I know .
     
    #12 Caraldo, Apr 15, 2018
  13. Quantumreality

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    I've seen that, too, but, in my case, I'm Bi, but my younger brother (and only sibling) is definitely straight. Kinda the opposite of that theory....:relaxed:
     
    #13 Quantumreality, Apr 20, 2018
  14. Humbly Me

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    Well it is only an increase in probability. We do know for a fact that increase testosterone in the wombs of sheep leads to female sheep offspring that display homosexual behavior.
     
    #14 Humbly Me, Apr 21, 2018
  15. Miri

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    I’m gay - the most “out-and-proud lesbian” my best friend knows, in her words - while my sister is so stereotypically straight and traditionally feminine she “exudes heterosexuality,” according to her friends (they’re right). Also, I’m a very hesitant and generally relationship-shy person, while my sister dates and progresses in intimacy much, much more easily. To top it off, we’re fraternal twins. If there is a God, I’m pretty sure he’s laughing right now.
     
    #15 Miri, Apr 21, 2018
  16. SemiCharmedLife

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    My sister and I both like guys. I have a gay cousin on one side of my family and a bi cousin on the other side.
     
    #16 SemiCharmedLife, Apr 22, 2018
    Last edited: Apr 22, 2018
  17. peregrinefalcon

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    Just to add my ten pence. There are 3 (2 sons and a daughter) of us in the family and all of us gay. I also have another friend who is gay with a gay brother.
     
    #17 peregrinefalcon, Apr 23, 2018
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