They are low in calories and exceptionally rich in vitamin C (one medium-sized red bell pepper contains 169% of the RDA for vitamin C, making it one of the richest dietary sources of this essential nutrient) and other antioxidants, making them an excellent addition to a healthy diet. Fresh, raw bell peppers are mainly composed of water (92%). The rest is made up of carbohydrates and small amounts of protein and fat. Bell peppers are also a decent source of fiber.
Like other fruits and vegetables, bell peppers may have many health benefits. These include improved eye health, and reduced risk of anemia and some chronic diseases.