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 If you are fighting against obesity, then you are all too familiar with its key players: diet, exercise and your genes. The less you move and the more you eat, the fatter you gain—an equation that may be heavily influenced by your particular genes. But researchers have long known that these three factors do not adequately explain every case of obesity, and now they are discovering increasingly convincing evidence of another important contributor to body weight, one that until recently has been almost completely ignored: the bacteria that live in your gut.    (A)   , they’re known as the gut microbiota, tens of trillions of microbes, which live and thrive in the human intestinal tract and colon and most of which survive without oxygen. These microbes perform an enormous range of vital functions, including helping regulate the calories the body obtains from food and stores as fat.    (B)   , they may help regulate weight. And a new study published in Science Translational Medicine suggests that the particular type and balance of bugs you harbor in your gut may help push your body toward either obesity or leanness and that these microbe populations might even be manipulated to potentially change your weight.
*microbiota 미소 생물학 ** microbe 미생물