The authors wanted to compare low-fat vs. low-carb diets, but they also wanted to study genetic and physical makeups that purportedly (their word) could influence how effective each type of diet will be for people. Previous studies had suggested that a difference in a particular genetic sequence could mean that certain people will do better with a low-fat diet. Other studies had suggested that insulin sensitivity may mean that certain people will do better with a low-carb diet.
It’s called a “beer belly” for a reason. Boozy bubbles are a major cause of belly bloat, as anyone who’s ever looked in the mirror after a few too many drinks can attest. But it’s not just the carbonation that is the culprit. Alcohol can lead to an overgrowth of bad bacteria in your stomach, leading to gas, not to mention all the empty calories that are going straight to your waistline. Instead, skip the alcohol altogether or limit yourself to one serving per day.