It affects roughly 1 in 10 adults in the U.S. Lactose is a form of sugar that occurs naturally in dairy products. Lactose is digested by the enzyme lactase. Lactase is available as a supplement to aid in digestion of foods containing lactose. All dairy products contain varying amounts of lactose. Lactose intolerance usually means you can tolerate SOME lactose. If you have lactose intolerance, you should still incorporate dairy into your diet as it is a good source of Calcium, Vitamin D, Vitamin A, Phosphorus, Potassium, Protein, and B Vitamins….