Endocrine Abstracts

Context: Bariatric surgery can lead to vitamin deficiencies.Objective: To assess changes in blood vitamin concentrations after gastric bypass surgery.Design: Twenty-nine patients underwent gastric bypass and 24 unmatched controls underwent lifestyle intervention in a prospective, non-randomised trial. Patients in the surgical group received multivitamin, iron, calcium, vitamin D, and vitamin B-12 supplements. No supplements were pr...

Background: Secondary hyperparathyroidism (SHPT) is common in obesity, and a concern after obesity surgery due to negative impact on bone. Longitudinal data is sparse, and relationships with vitamin D and calcium levels are unclear. We studied the prevalence of SHPT over five years after Roux-en-Y gastric bypass (RYGB) and investigated whether SHPT was associated with serum levels of 25-hydroxyvitamin D (25(OH)D) and ionized calcium (iCa).Methods: 347 of...