Abstract
More than 650 million adults in the world are obese. Bariatric surgery has proven to be an effective treatment; however, it is underutilized. A relatively new procedure, the single-anastomosis duodeno-ileal bypass with sleeve gastrectomy (SADI-S), has shown greater weight loss success than leading procedures but little is known about its effects on nutrient deficiencies. The present review aims to explore the effects of the SADI-S on blood concentrations of 25-OH vitamin D and vitamin B12 up to 1 year postsurgery. Findings suggest that vitamin D deficiency is more prevalent than vitamin B12 deficiency in patients who have undergone the SADI-S; however, there was no clear cause and effect relationship.
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