Study: Oxytocin can help keep men faithful

Researchers in Germany gave 86 heterosexual men a whiff of oxytocin, which is a hormone, made naturally in the body. They say afterwards, those men in committed relationships were more likely to keep a greater physical distance between themselves and women they didn't know. The study is in the Journal of Neuroscience.

The study found oxytocin did not affect single men and or the distance the participants kept between themselves and other men.

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