We knew that having healthy populations of bacteria living in the intestines is enormously beneficial to health. Those little guys not only help weed out bad bacteria that could cause infection but also break down food to assist with absorption. New research points to another benefit of supplementing your existing gut flora with probiotics: fat loss. A study published in the European Journal of Clinical Nutrition found that when overweight subjects were given a probiotic containing a member of the Lactobacillus family for 12 weeks, they exhibited significant decreases in weight and body fat, particularly around the abdomen and hips. The best way to ensure you’re getting maximal amounts of those essential bacteria? Eat yogurt and take a probiotic supplement.