Loneliness can be contagious

http://www.msnbc.msn.com/id/34209727/ns/health-behavior/

By Diane Mapes
msnbc.com contributor
updated 8:40 a.m. ET, Tues., Dec . 1, 2009

We’re used to hearing about people spreading colds and flu. But according to a new study in the Journal of Personality and Social Psychology, there’s another human condition that’s equally contagious: loneliness.

“Loneliness spreads across time,” says John Cacioppo, a neuroscientist and psychologist at the University of Chicago and one of the authors of the study. “It travels through people. Instead of a germ, it’s transmitted through our behaviors.”

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While loneliness can be “contagious,” Cacioppo says it’s important to note it’s not a disease, nor is it a personal weakness. It’s actually a biological reaction, much like hunger or thirst or pain.

“Society tends to think of it as an individual characteristic — there are just loners,” he says. “But that’s the wrong conception of what loneliness is. It’s a biological signal motivating us to correct something that we need for genetic survival. We need quality relationships. We don’t survive well on our own.”

Studies, in fact, show loneliness can actually be harmful to both mental and physical health, leading to depression, high blood pressure, increases in the stress hormone cortisol, and compromised immunity.

Unfortunately, quality friendships can sometimes be difficult to find or maintain in our busy, BlackBerried society.

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But you don’t have to have a slew of BFFs.

“Sometimes people get overwhelmed and think ‘I need to have 15 best friends,’” she says. “But it doesn’t need to be that big. One friend, one relationship, can be very powerful.”

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The secret, says Cacioppo, is realizing loneliness is nothing more than your body sending you a signal.

“All normal humans feel lonely at some point in time, just like they feel hunger and thirst and pain,” he says. “But while we have cupboards filled with food, taps for water and medications for pain, we don’t have anything comparable for loneliness. I’m not saying you need a cupboard full of friends, but if you feel lonely, pay attention and take the time to repair it.”