"It's probably a waste of time," said Kelly Brownell, director of Yale University's Rudd Center for Food Policy and Obesity.
Brownell's assessment is harsher than most. But the science seems to back him up.
Only about 15 to 20 U.S. studies have tried to evaluate the effect of financial incentives on weight loss. Most of those studies were small and didn't look at whether such measures worked beyond a few months. None could make conclusions about how much money it takes to make a lasting difference for most people. [Read more...]
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