Turning the body's brown fat into a furnace fuelled by unwanted flab might provide a new way to lose weight.Brown fat helps to burn just enough fuel to keep body temperature constant, suggesting it could be manipulated to burn slightly more and combat obesity.Key to that manipulation may be a protein called bone morphogenetic protein 8B, or bmp8B. Mice kept at a chilly 5 °C make about 140 times more bmp8B than warm mice.
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