Dietary Fiber has proved its beneficial effect on health through numerous studies. Different forms of fibers act in the body in diverse ways such as provides satiety, increases insulin sensitivity, inhibits cholesterol reabsorption, improves laxation, maintains pH of the gut and improves immunity. Studies recommend an intake of 38 to 40 g of fiber per day in the diet to avail these benefits. Though there are numerous beneficial effects of fiber in the body, studies also reported a lack of adequate intake of fiber in the diet. Hence, an attempt was made to review the beneficial role of fiber and fiber supplements in different health conditions such as obesity, diabetes, fatty liver, high cholesterol, constipation, gut health as well as immunity. Strength as well as weakness of the review and future recommendations on fiber study is also highlighted.