Lactose-free solutions for strong bones. Our bodies digest the milk sugar lactose with the help of a certain enzyme, lactase. People suffering from lactose intolerance have little or no lactase activity. Don't let lactose intolerance keep you from getting your daily doses of calcium and vitamin D: not consuming enough calcium or vitamin D could result in a lower bone-mineral density. Lucky for you, we're in a new age. If you can't drink cow's milk, try a soymilk that is fortified with 30% of the daily value for calcium and vitamin D. Not impressed with soymilk's nutty flavor? Try lactose-free milk for all the benefits of good ol' milk without all the stomach upset.