"I started to wonder whether there was a biochemical cause for this feeling of closeness," she said.
The group found women's brains released more oxytocin after gossiping, compared with having an ordinary conversation about, for example, the weather.
Oxytocin is released during lovemaking, leading to it being nicknamed the "cuddle chemical".
Other loving touches, from hugging a teddy bear to patting a dog, also trigger its release.
The researchers studied only straight females because oxytocin can also be released when people are sexually aroused, and they did not want subjects to be attracted to one another and release the hormone for that reason.
The release of the hormone helps bring people closer together after they have gossiped, Dr Brondino says.
On evolutionary terms, the authors say gossip has its uses, including "establishing group rules, punishing trespassers, exercising social influence through reputational systems, and developing and strengthening social bonds."
The authors also found the effect does not change depending on the person's personality.
"Psychological characteristics, e.g. empathy, autistic traits, perceived stress, envy, did not affect oxytocin rise in the gossip condition," the authors wrote.
This means whether you think it or not, gossip is good for your brain.
What is oxytocin?
Oxytocin, known as the "love hormone", engenders trust and generosity.
Oxytocin is a hormone released naturally in the blood and brains of humans and other mammals, during social and sexual behaviours.
The hormone is produced by women during labour to help them bond with their baby.
It is also released during lovemaking, leading to it being nicknamed the "cuddle chemical".
Other loving touches, from hugging a teddy bear to patting a pet dog, also trigger its release.
