Gut bacteria plays a role in long-term weight gain

Only 41% of the change in weight was explained by genes

Weight gain happens when we consume more food than we can burn, and weight loss happens when we burn more energy than we consume. But why do some people seem to eat whatever they want and not gain weight, and others appear to gain weight even if they eat reasonable amounts of food? The answer, at least in part, may be found in the bacteria that live in our guts.

Our latest research, published in the International Journal of Obesity, shows that people who have a stable weight over nine years or lose weight, have a larger number