Despite decades of research focusing on obesity, what happens in the body when we lose weight, and why losing weight can improve health, is still poorly understood.
Now a new study, published in Nature on Wednesday (July 9), provides clues as to what may actually be happening. It suggests that the weight loss does more than shave off pounds — it changes fat on a cellular level, rewiring how the tissue is metabolized and maybe even "rejuvenating" it.
