 Staying active and healthy as we age starts with strong bones. To keep your bones strong, you need calcium, vitamin D, and regular exercise. A bone density test called DEXA helps detect low bone mass and bone disease called osteoporosis. If you're 65 or older, Medicare provides pre-bone density tests every two years. Ask your doctor to schedule yours. For more information on how to be bone strong, visit pathtogoodbonehealth.org.