Fiber bars refer to a type of snack or energy bar that is high in dietary fiber. These bars are typically made with whole grains, fruits and vegetables, nuts and seeds, and other nutritious ingredients that provide significant amounts of soluble and insoluble fibers. The inclusion of these fibers in the bar helps to promote healthy digestion, appetite control, and overall gut health. Fiber bars are often marketed as a convenient and tasty way for individuals to increase their daily fiber intake and improve their diets.