There was some drug that came out 10 years ago that claimed to turn regular fat into brown fat which your body could burn for heat.
Avandia was thought to but results were mixed. Roscovitine (seliciclib) is an experimental chemotherapy drug that has shown a variety of interesting side effects including treating HIV and other viruses, as well as converting white fat to beige fat. Brown fat is distinct from white->beige fat.
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