Word: gutting
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...growing body of research suggests there's another, less visible reason to focus on your gut if you want to lose weight. Scientists led by Andrew Gewirtz at Emory University reveal that your intestines harbor a universe of bacteria - the so-called gut microbiota - that may play an important role in whether your body will store the food you eat as extra pounds. (See pictures of what the world eats...
Gewirtz's team, including researchers at Emory, Cornell University and the University of Colorado at Boulder, became intrigued by the relationship between gut bugs and weight when they noticed that lab mice lacking a certain protein had more of the bugs than other animals and were about 15% heavier. These mice also had a higher level of inflammation, which the authors explain in their paper published online Thursday in Science Express is what may account for the extra weight. Inflammatory signaling can promote a condition called metabolic syndrome, which causes weight gain, high blood pressure and high cholesterol levels...
...receptor 5 (TLR5), which most intestinal cells sprout on their surface. Its job is to recognize and bind to the whiplike flagella that bacteria use to move around. TLR5 acts as a traffic cop for controlling the mass of pathogens living in the intestine; without it, the normally harmless gut bacteria tend to overflourish and expand in number. (See and listen to an audio slideshow about obesity rehab...
...finding was confirmed when the team transferred the bacterial gut population from TLR5-deficient mice into animals that were specially bred to have no immune system, making them incapable of rejecting foreign cells and bacteria. When these animals received the teeming gut world of the TLR5-deficient mice, they too began eating more and developed the same metabolic-syndrome symptoms that their donors had. In other words, the obesity profile of the heavier mice had been transferred to normal mice. "So, applying the logic to humans," says Gewirtz, "we know that to gain weight and become obese, [it] requires...
...piece on the bomb squad, and found myself in Baghdad eight months later. At some point while I was over there, it occurred to me that the insanity of the war was not being expressed in the popular media and that it could make a really eye-opening, gut-wrenching movie about the horrors of war to see the war through the eyes of these guys with this gutsy job on the front lines. (See pictures of the U.S. troops in Iraq...