Here’s some not-so-sobering news for party people, barhoppers and clubgoers. Individuals who inherit a particular gene variant that tweaks the brain’s reward system are especially likely to drink a lot of alcohol in the company of heavy-boozing peers.

That’s the preliminary indication of a new study directed by psychology graduate student Helle Larsen of Radboud University Nijmegen in the Netherlands. Adults carrying at least one copy of a long version of the dopamine D4 receptor gene, dubbed DRD4, imbibed substantially more alcohol around a heavy-drinking peer than did others who lacked that gene variant, Larsen’s group reports in a paper published online July 7 in Psychological Science.
 

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