Gut Bacteria Might Contribute to Obesity

New scientific evidence suggests what or how much we eat isn’t the only factor affecting our weight. The microbes living in our intestines matter, too.

The results of this new study raise the possibility that probiotic bacteria may someday be added to diet and exercise to help fight obesity.

In the study, cited in Science, researchers started with mice raised in sterile environments with no bacteria in their guts and gave them gut microbe samples taken from human twins, both identical and …

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