The Microbes Made Me Eat It

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Science  09 Apr 2010:
Vol. 328, Issue 5975, pp. 179-180
DOI: 10.1126/science.1188876

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We share our bodies with a huge array of microorganisms. Many of these live in the intestine and number in the trillions (1). On page 228 in this issue, Vijay-Kumar et al. (2) show that the interaction between our immune system and these gut microbes plays an important role in the metabolic diseases that plague developed countries, with profound implications for the rise in obesity and what can be done about it.