Nicholas A. Christakis is a sociologist and physician known for his research on social networks and on the socioeconomic, biosocial, and evolutionary determinants of behavior, health, and longevity
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A colleague’s husband’s sister can make a person fat, even if they don’t know her. A happy neighbor has more impact on happiness than a happy spouse. These startling revelations of how much people truly influence each other are revealed ... SEE MORE