Daily Mail |
We may know why younger brothers are more likely to be gay
New Scientist The more older brothers a boy has, the more likely he is to be gay when he grows up – an effect called the “fraternal birth order effect”. Now it seems that increasing levels of antibodies in a mother's immune system could play a role. Anthony Bogaert ... Science links gay sons to mums' immune systems The more older brothers a man has, the more likely he is to be gay, study found |
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