It seems more and more people are taking notice of the all the bacteria that live inside your gut. A new article over at Time.com is talking about the bacteria in your gut being linked to obesity. Here are some interesting excerpts…

“If you have ever fought the battle of the bulge, then you are all too familiar with its key players: diet, exercise and your genes. The less you move (calories out) and the more you eat (calories in), the more fat you gain — an equation that may be heavily influenced by your particular genes. But scientists have long known that these three factors do not adequately explain every case of obesity, and now researchers 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.

That diversity and its impact came into plain view when the researchers started experimenting with the rodents' diet. When one group of mice was fed a typical Western diet, high in fat and sugars, they tended to gain weight and grow more Firmicutes gut bacteria and fewer Bacteroidetes. In mice given a low-fat plant-based chow, the distribution of the two groups of bugs flipped and the animals remained lean. It's not clear whether the balance of gut bugs causes weight gain or is a result of it, but the findings suggest that a "gut profile" could potentially serve as a diagnostic tool for identifying who might have a propensity for obesity. If, for instance, your gut environment contains a preponderance of Firmicutes, then your body may be predisposed to digest calories in a way that leads to greater fat storage. In fact, in Gordon's earlier work with identical twins of different weights, he found that the obese twin tended to have more Firmicutes colonies than the leaner one.

Gordon also found in his mouse populations that changing the animals' diet caused a dramatic and rapid shift in the population of bacteria in their gut. Switching a mouse from low-fat plant chow to a high-fat Western diet resulted in an explosion of Firmicutes in less than a day.”

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I think it’s really interesting to see more and more of the media’s focus being put on the little things inside us. People are finding out that losing weight isn’t just all about how much (or little) you eat. Also, if you’d like to improve the balance of good to bad bacteria in your gut, you can try out some probiotics for free, which I have written about here