"infecting" - 1 õppematerjal

The 4-Hour Body - An Uncommon Guide to Rapid Fat-Loss, Incredible Sex, and Becoming Superhuman - Timothy Ferriss

There has been a profound shift in our populations of gut bacteria--the little creatures that live in our digestive tracts--and studies show the changes as correlated with increased fatness. There are actually 10 times more bacterial cells in your body than human cells: 100 trillion of them to 10 trillion of you. For the most part, these bugs help us, improving our immune system, providing vitamins, and preventing other harmful bacteria from infecting us. These bacteria also regulate how well we harvest energy from our food. So far, two primary strains of bacteria have been found to in uence fat absorption, almost regardless of diet: Bacteroidetes and Firmicutes. Lean people have more Bacteroidetes and fewer Firmicutes; obese people have more Firmicutes and fewer Bacteroidetes. As obese people lose weight, the ratio of bacteria in their gut swings confidently over to more Bacteroidetes.