Monogamy may alter brain chemistry

LOS ANGELES, Oct. 15 (UPI) -- A U.S. researcher says a study of prairie voles suggests monogamy may alter brain chemistry, resulting in depression when separated from their mate.

Neuroscientist Larry J. Young of Emory University said close monogamous relationships foster the release of corticotropin-releasing factor, or CRF, that builds loyalty. The compound, however, can also result in depression when the pair are separated, the Los Angeles Times reported Wednesday.

He said the same chemical is found in human brains. "Whenever you form a pair bond, it changes your neurochemistry," Young told the newspaper. "If you lose that partner, it has a dramatic impact on the brain."

The study is published in the journal Neurospychopharmacology.