The BREATH test that could explain why you"re fat: An imbalance of gas in the gut can slow down how we burn calories

The BREATH test that could explain why you're fat: An imbalance of gas in the gut can slow down how we burn calories Scientists looked at concentrations of hydrogen and methane gasses in the bodies of 800 people People who have a high concentration of both gases are more likely to have a higher BMI and more body fat Imbalance of these gases may cause some of us to harvest more calories than we need from food By Anna Hodgekiss PUBLISHED: 16:34 GMT, 26 March 2013 | UPDATED: 17:14 GMT, 26 March 2013 Obesity may be caused by an imbalance of gases in the body, rather than over-eating or a lack of exercise, researchers claim.