Men's Fitness states that the primary benefits of whey protein include fat loss, increased strength and reduced hunger and stress. Regular intake of whey protein has also been shown to fight several common cancers and improve the immune system.
According to Men's Fitness, individuals supplementing their diets with whey protein have been shown to lose a greater percentage of body fat than individuals consuming isocaloric mixes. Regularly consuming whey protein after resistance training results in increased fat-free mass and muscle strength. Whey protein also helps to reduce levels of ghrelin, which is a naturally produced hormone that tells the body it is hungry. Men's Fitness states that regularly consuming whey protein may help fight against prostate and colon cancer, among others. It also reduces symptoms of depression and helps regulate the immune system.
Mayo Clinic reports that whey protein is also beneficial for several other purposes, including allergy prevention, skeletal muscle mass preservation and diabetes. In regard to allergy prevention, whey protein formula may help to reduce the risk of cow's milk allergies in children aged 3 years or older. It is widely considered an excellent source of protein that also benefits older people and women after exercise. In addition, whey protein has been shown to lower blood sugar in individuals with type 2 diabetes.