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 Looking for a diet that will help you burn the fat? Consider the chilli. Because ? the chemical compound that gives chilli peppers  their kick, appears to prevent weight gain in mice that are  fed with a high-fat diet. The finding was presented at the Biophysical society's annual meeting in Baltimore. Obesity¹ is caused by an energy imbalance, more calaries go in than go out. So conventional wisdom has it to tip the scale the other way; You could eat less, or move more. But maybe there's the third option. Researchers treated mice a diet high in fat. But some mice also got a pinch of capsaicin. After twenty-five weeks, the mice with added spice gained less weight than those on fat alone, even though they ate and drank the same amount. Since the mice that got the ? treatment were more likely to get off their rodent² wheels, they naturally spent more time exercising than their fat-fed counterparts. But before you stock up on chilli-flavored chittos, keep in mind that mice eating a well-balanced diet in the first place were the most active and sleek³. So feel free to use your ? But maybe skip the chips.