Yes, people with ankylosing spondylitis do have a risk of osteoporosis. Ankylosing spondylitis is a chronic inflammatory disease that causes stiffness and pain in the spine. Prolonged inflammation and limited mobility can lead to decreased bone density and an increased risk of fractures. Therefore, individuals with this condition should regularly check their bone density and take preventive measures against osteoporosis, such as appropriate exercise, a healthy diet, and medication if necessary.