Vinegar may aid in fat loss, as well as controlling blood pressure and blood sugar levels, states WebMD. Acetic acid, which is the main ingredient in vinegar, activates genes that are used in the breakdown of fats.
Researchers found that mice that were given vinegar developed up to 10 percent less body fat than mice that did not receive vinegar, with both groups being given the same amount of food, according to WebMD. In people, researchers have found that those who consume vinegar lost slightly more weight than those who did not. While vinegar may aid in weight loss, it is not more important than an active lifestyle and a healthy diet.