Gastric bypass surgery changes gut microbes

illustration of different weight loss surgeries

Two types of weight loss surgeries, Roux-en-Y gastric bypass (center) and vertical banded gastroplasty (right), change the mix of microbes in women’s intestines. Mice with microbes transplanted from the women who had surgeries gained less weight than did mice that got bacteria from obese women. 

 Tremaroli and Karlsson et al./Cell Metabolism 2015

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