The U.S. Department of Agriculture reports that approximately 16 percent of total calories taken in each day in the average American diet, are from added sugars. Fruit is an integral part of good nutrition as it provides nutrients necessary for good health. Although fruit contains naturally occurring sugar, its nutritious, low-fat, high-fiber package makes it much healthier than sweets with added fats and sugars, such as chocolate candies. Although fruit contains sugar, it also offers a variety of healthy nutrients, too, such as vitamins, minerals, antioxidants, water and, most importantly, fiber. The fiber.