The New England Journal of Medicine has just published a study that having close friends who are fat can nearly triple your risk of becoming obese. Read the LA Times article for more detail.
This validates one of the most powerful forces at work within social networks - the principle of social proof. What it tells us is that human beings are constantly seeking a form of approval for our decisions and actions, and that one of the ways in which we find that approval is by looking at what other people are doing in similar situations.
26 July 2007
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