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Human studies show that social interactions increase the level of the hormone oxytocin in the brain, and that oxytocin helps people bond and socialize more, increasing their resilience in the face of stress and leading to longer, healthier lives. Studies of male-female rat pairs and other rodents, such as monogamous prairie voles, confirm these findings.
The new study extends these studies to male rats housed in the same cage, and demonstrates that mild stress can actually make male rats more social and cooperative than they are in an unstressed environment, much as humans come together after non-life-threatening events such as a national tragedy. After a mild stress, the rats showed increased brain levels of oxytocin and its receptor and huddled and touched more.
"A bromance can be a good thing," said lead author Elizabeth Kirby, who started work on the study while a doctoral student at UC Berkeley and continued it after assuming a postdoctoral fellowship at Stanford. "Males are getting a bad rap when you look at animal models of social interactions, because they are assumed to be instinctively aggressive. But even rats can have a good cuddle -- essentially a male-male bromance -- to help recover from a bad day."
Category(s):Health / Illness / Medical Issues, Men's Issues
Source material from University of California - Berkeley
