I hope there isn't a big media jump to a cause and effect relationship in this recent study which found an association between levels of two types of bacteria and obesity. We've done a round or 10 about between those who believe weight is all about amount of food and amount of exercise vs those who believe there are other factors. I don't really intend to start a 23 page thread, just contribute a bit of new information. Does a bug in our gut make us fat?
quote: Obese people have higher levels of unusually efficient bacteria in their guts than lean people do, offering a possible explanation for why they get fat, researchers reported today.
Humans need bacteria in their guts to help convert otherwise indigestible foods into a form that is digestible, and the bacteria in obese people are better at the process, a team from Washington University in St. Louis reported in two papers published in the journal Nature.