Research found a particular gut microbe may help to prevent weight regain. Prostock-studio/ Shutterstock Losing weight is hard. Keeping it off is often even harder. Research has shown that most people who intentionally lose weight regain at least some of it within a few years. This is often attributed to lack of “willpower”, but the evidence actually shows that after we lose weight, the body undergoes a range of biological changes that encourage weight regain. This includes increased hunger, cha