Nature, nurture, or network?

Your friends and family influence your drinking, sleep, weight, and happiness—more than you think. Our work demonstrating the contagious nature of everything from obesity to altruism has stirred up considerable debate in the research world. It has also suggested powerful new ways to intervene in networks—for instance, to speed the switch to generic drugs, or to slow the spread of sexually transmitted diseases. Read more: http://www.yalealumnimagazine.com/articles/3943/nicholas-christakis