Gene therapy can make wayward male meadow voles monogamous, a finding that could shed light on everything from romantic love to addiction, and possibly new fidelity treatments.

The discovery, by researchers at the Yerkes National Primate Research Center and Atlanta’s Center for Behavioral Neuroscience in Georgia, also supports previous research linking social bond formation with drug addiction.

“Our study provides evidence in a comparatively simple animal model that changes in the activity of a single gene profoundly can change a fundamental social behavior of animals within a species,” says Yerkes researcher Larry Young.

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