Dietary fiber is important for our health and can help with weight loss. A type of fiber called beta-glucan, found in oats and barley, can control blood sugar and help mice lose weight. Other fibers like wheat dextrin, pectin, and resistant starch did not have the same effect. Fiber is good for the bacteria in our guts, but most people don't eat enough of it. Beta-glucan fiber was found to increase a specific type of bacteria in mice that is linked to weight loss. More research is needed to see if this fiber can have the same effect in humans. This study was published in the Journal of Nutrition. So, remember to eat your fiber to stay healthy and maybe even lose weight!