Listen to the Story
Embed<input class="embed-url embed-url-no-touch" readonly value="” />
Close embed overlay <iframe src=”http://www.npr.org/player/embed/463071516/463146266″ width=”100%” height=”290″ frameborder=”0″ scrolling=”no” title=”NPR embedded audio player”>
Turnbull/Ikon Images/Getty Images
Money is a big motivator. And the prospect of a cash payoff in any sort of gamble is alluring — just think of the Powerball buzz this week.
So, what happens when financial incentives are tied to weight-loss goals? A growing body of evidence suggests that it’s not necessarily a slam dunk.