Journal
NATURE CLINICAL PRACTICE GASTROENTEROLOGY & HEPATOLOGY
Volume 3, Issue 12, Pages 689-699Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/ncpgasthep0637
Keywords
cirrhosis; osteoporosis; parathyroid hormone; vitamin D
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The osteoporotic fracture rate in patients with chronic liver disease is approximately twice that of age-matched, control individuals. About 66% of patients with moderately severe cirrhosis and 96% of patients awaiting liver transplantation have vitamin D deficiency. Studies have strong correlation between vitamin D deficiency and bone density, particularly in the hip. Previous studies of vitamin D therapy in cirrhosis-related bone disease have had major design flaws. Most reports and guidelines on the treatment of hepatic bone disease have concluded that vitamin D deficiency does not have a significant pathogenic role in the development of osteoporosis in cirrhosis, and that there us no evidence for a therapeutic effect of vitamin D supplementation. Conversely, it is generally recommended that patients with cirrhosis and low bone density should receive calcium and vitamin D supplementation; yet there is a paucity of reliable data on the optimal doses to use, as well as a lack of clearly demonstrated benefit. We believe that clinical trials of vitamin D therapy in these patients with liver disease are warranted. As low-dose oral supplementation often will not normalize vitamin D levels or suppress parathyroid hormone activity in cirrhotic patients, high-dose, parenteral vitamin D might be preferable, but further long-term studies are required to assess the benefits and safety of this approach.
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