Cause of osteoporosis in celiac patients?

People with celiac disease may develop osteoporosis due to immune-system attacks on bone tissue (N Engl J Med. 2009; 361:1459-1465). Although osteoporosis is a known complication of celiac disease, scientists have always believed that it occurred because celiac patients cannot properly absorb calcium and vitamin D from their diet and were therefore unable to maintain healthy bone tissue.

At the heart of this development is the protein osteoprotegerin, which plays a crucial role in maintaining bone health by controlling the rate at which bone tissue is removed. Researchers from the United Kingdom's University of Edinburgh and University of Liverpool detected autoantibodies against osteoprotegerin in several patients with celiac disease.

“Such autoantibodies may be associated with the development of high-turnover osteoporosis, but whether autoantibodies against osteoprotegerin commonly contribute to the pathogenesis of osteoporosis in patients with celiac disease remains to be determined,” the investigators conclude.

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