![Research confirms men with older brothers are more likely to be gay, suggesting same-sex attraction has a biological basis Research confirms men with older brothers are more likely to be gay, suggesting same-sex attraction has a biological basis](https://images.theconversation.com/files/437951/original/file-20211216-23-1i2gvb3.jpeg?ixlib=rb-1.1.0&rect=32%2C57%2C5431%2C3579&q=20&auto=format&w=320&fit=clip&dpr=2&usm=12&cs=strip)
Research confirms men with older brothers are more likely to be gay, suggesting same-sex attraction has a biological basis
![Happy young man with raised hands holding LGBTQ Pride rainbow flag. Celebrating character, clip art element for LGBT History Month, Pride Month. Vector illustration in hand drawn simple flat style 11859816 Vector Happy young man with raised hands holding LGBTQ Pride rainbow flag. Celebrating character, clip art element for LGBT History Month, Pride Month. Vector illustration in hand drawn simple flat style 11859816 Vector](https://static.vecteezy.com/system/resources/previews/011/859/816/non_2x/happy-young-man-with-raised-hands-holding-lgbtq-pride-rainbow-flag-celebrating-character-clip-art-element-for-lgbt-history-month-pride-month-illustration-in-hand-drawn-simple-flat-style-vector.jpg)
Happy young man with raised hands holding LGBTQ Pride rainbow flag. Celebrating character, clip art element for LGBT History Month, Pride Month. Vector illustration in hand drawn simple flat style 11859816 Vector
![A group of gay friends. Young adult men couples. LGBT. Flat editable vector illustration, clip art Stock Vector | Adobe Stock A group of gay friends. Young adult men couples. LGBT. Flat editable vector illustration, clip art Stock Vector | Adobe Stock](https://as2.ftcdn.net/v2/jpg/01/94/58/09/1000_F_194580958_JvDvo6ORWIvtNBYBCkzX3xt9JoHaP2hZ.jpg)
A group of gay friends. Young adult men couples. LGBT. Flat editable vector illustration, clip art Stock Vector | Adobe Stock
![Young gay couple eating ramen with the chopstics. Date. Restaurant. Daily life. Flat editable vector illustration, clip art Stock Vector | Adobe Stock Young gay couple eating ramen with the chopstics. Date. Restaurant. Daily life. Flat editable vector illustration, clip art Stock Vector | Adobe Stock](https://as1.ftcdn.net/v2/jpg/02/58/37/34/1000_F_258373418_1pZJUpHjHUwM6zJKPQCtEVGd3ryf8cs0.jpg)
Young gay couple eating ramen with the chopstics. Date. Restaurant. Daily life. Flat editable vector illustration, clip art Stock Vector | Adobe Stock
![Premium Vector | Multiethnic gay are proud to be. young homosexuals gay couple love each other. element lgbt and gay Premium Vector | Multiethnic gay are proud to be. young homosexuals gay couple love each other. element lgbt and gay](https://img.freepik.com/premium-vector/multiethnic-gay-are-proud-be-young-homosexuals-gay-couple-love-each-other-element-lgbt-gay_573942-1593.jpg?w=2000)
Premium Vector | Multiethnic gay are proud to be. young homosexuals gay couple love each other. element lgbt and gay
![Couple of young multinational homosexuals sit on the couch, an American guy presents a gift to his partner. Homeliness, gay, young LGBT family concept. 60 fps Stock Video Footage by ©Footage.ua #182979238 Couple of young multinational homosexuals sit on the couch, an American guy presents a gift to his partner. Homeliness, gay, young LGBT family concept. 60 fps Stock Video Footage by ©Footage.ua #182979238](https://st3.depositphotos.com/14172478/18298/v/600/depositphotos_182984772-stock-video-pair-of-young-multinational-homosexuals.jpg)
Couple of young multinational homosexuals sit on the couch, an American guy presents a gift to his partner. Homeliness, gay, young LGBT family concept. 60 fps Stock Video Footage by ©Footage.ua #182979238
![410+ Gay Couple Kissing Illustrations, Royalty-Free Vector Graphics & Clip Art - iStock | Young gay couple kissing, Old gay couple kissing, Gay couple kissing in bed 410+ Gay Couple Kissing Illustrations, Royalty-Free Vector Graphics & Clip Art - iStock | Young gay couple kissing, Old gay couple kissing, Gay couple kissing in bed](https://media.istockphoto.com/id/1320223499/vector/gay-couple-in-love-lgbtq.jpg?s=612x612&w=0&k=20&c=cIvFa5B2J-L-LJ4HaLkrom0LKdBGxOU_4tsIYLkz0zQ=)
410+ Gay Couple Kissing Illustrations, Royalty-Free Vector Graphics & Clip Art - iStock | Young gay couple kissing, Old gay couple kissing, Gay couple kissing in bed
![LGBTQ community. Happy hugging young people holding an LGBT rainbow flag. Group of gay, lesbian, bisexual, transgender activists. Flat editable vector illustration, clip art 2917960 Vector Art at Vecteezy LGBTQ community. Happy hugging young people holding an LGBT rainbow flag. Group of gay, lesbian, bisexual, transgender activists. Flat editable vector illustration, clip art 2917960 Vector Art at Vecteezy](https://static.vecteezy.com/system/resources/previews/002/917/960/original/lgbtq-community-happy-hugging-young-people-holding-an-lgbt-rainbow-flag-group-of-gay-lesbian-bisexual-transgender-activists-flat-editable-illustration-clip-art-vector.jpg)