Preoperative micronutrient status in morbidly obese patients before undergoing bariatric surgery: results of a cross-sectional study

Many morbidly obese patients in Germany suffer from deficiencies in multiple micronutrients, particularly vitamin D, ascorbic acid, and β-carotene before sleeve gastrectomy. Measurement of preoperative micronutrient status will help supplement patients before, and optimize nutritional therapy after, surgery.