The nutraceuticals business has experienced tremendous growth over the past few years and is currently estimated to exceed $65 billion a year in global sales. The term "nutraceutical" is used to describe any food, or part of a food, that offers a medical or health benefit beyond simple nutrition. Such benefits may include the prevention or treatment of disease. These products range from pure compounds and herbs used in capsules (e.g. ginseng) to foods that contain added bioactive (biologically active) ingredients, such as orange juice enhanced with calcium.