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Controversies in vitamin D: deficiency and supplementation after Roux-en-Y gastric bypass surgery

Kerstyn C Zalesin, Wendy M Miller, Katherine E Nori Janosz, Jose Yanez, Kevin Krause, David L Chengelis and Peter A McCullough

Current vitamin D recommendations are insufficient and a higher intake is necessary in the general population. The requirements of bariatric surgery patients can be augmented by longstanding obesity coupled with, gastro–intestinal malabsorption. Vitamin D deficiency promotes metabolic bone disease and may increase risks for a multitude of other medical conditions. This article reviews some controversies surrounding vitamin D and proposes a management strategy for bariatric surgery patients.