If your friends are obese, your risk of obesity is 45 percent higher. ... If your friend's friends are obese, your risk of obesity is 25 percent higher. ... If your friend's friend's friend, someone you probably don't even know,… — Nicholas A. Christakis Copy Share Image
The reason we form networks is because the benefits of a connected life outweigh the costs. It's to our advantage as individuals and a… — Nicholas A. Christakis Copy Share Image
It's fashionable to speak about vulnerable populations in medicine and public policy, but it's harder to find a more vulnerable population than those who… — Nicholas A. Christakis Copy Share Image
“If we are connected to everyone else by six degrees and we can influence them up to three degrees, then one way to think… — Nicholas A. Christakis Copy Share Image
Social networks are these intricate things of beauty, and they're so elaborate and so complex and so ubiquitous that one has to ask what… — Nicholas A. Christakis Copy Share Image
We are, first of all, not solitary creatures and second of all, we are deeply embedded in the lives of others. It's very easy… — Nicholas A. Christakis Copy Share Image
I like to have met someone in real life before being their Facebook friend. — Nicholas A. Christakis Copy Share Image
It's important for students to take their studies seriously. — Nicholas A. Christakis Copy Share Image
My entire youth was spent with an incredibly ill parent... I don't think you can grow up that way and not be marked by… — Nicholas A. Christakis Copy Share Image
I'm not suggesting that social scientists stop teaching and investigating classic topics like monopoly power, racial profiling and health inequality. But everyone knows that… — Nicholas A. Christakis Copy Share Image
One reason citizens, politicians and university donors sometimes lack confidence in the social sciences is that social scientists too often miss the chance to… — Nicholas A. Christakis Copy Share Image
People have just assumed that... if we call our Facebook acquaintances our friends, we must be influenced by them, too. But we're not. — Nicholas A. Christakis Copy Share Image
We are, first of all, not solitary creatures and second of all, we are deeply embedded in the lives of others. It's very easy… — Nicholas A. Christakis Copy Share Image
