That fat can make you lose weight may sound strange. Even stranger is what the reviewed research documented (Böstrom P, et.al.,2012).

When both mice and humans exercise, a membrane protein is cleaved and secreted as a newly identified hormone called irisin.  Irisin acts on what’s called white fat cells, that’s the type of fat that makes us fat, and stimulates the development of brown fat. Brown fat is more metabolically active and improves insulin sensitivity and energy expenditure, in other words it makes us lose weight.

New research presented at the American diabetes Association meeting on June 21, 2013 showed that healthy men that exercised for 12 weeks on a stationary bike converted some of their white fat to healthier browner fat.

This is one more reason why exercise helps keep us slim. The extra calories you burn when you exercise is just a small part of why exercise is helpful if you want to lose weight.

 

 

 

Boström P, Wu J, Jedrychowski MP, Korde A, Ye L, Lo JC, Rasbach KA, Boström EA, Choi JH, Long JZ, Kajimura S, Zingaretti MC, Vind BF, Tu H, Cinti S, Højlund K, Gygi SP, Spiegelman BM. Dependent myokine that drives brown-fat-like development of white fat and thermogenesis. Nature. 2012 Jan 11;481(7382):463-8. doi: 10.1038/nature10777. A PGC1-α

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