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Osteoarthritis is a joint disease that mostly affects cartilage. Cartilage is the slippery tissue that covers the ends of bones in a joint. Healthy cartilage allows bones to glide over each other. It also helps absorb shock of movement.
The Surgeon General wants you to know that you can improve your bone health by getting enough calcium, vitamin D, and physical activity. If you have osteoporosis or another bone disease, your doctor can detect and treat it. This can help prevent painful fractures.