The Effect of the Single-Anastomosis Duodeno-Ileal Bypass With Sleeve Gastrectomy (SADI-S) on Circulating Concentrations of 25-OH Vitamin D and B12 at 1 Year Postsurgery

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 B 12 up to 1 year postsurgery. Findings suggest that vitamin D deficiency is more prevalent than vitamin B 12 deficiency in patients who have undergone the SADI-S; however, there was no clear cause and effect relationship.