Which Factors Are Associated with a Higher Prevalence of Anemia Following Bariatric Surgery? Results from a Retrospective Study Involving 1999 Patients.

Introduction: Anemia in obese patients is common and multifactorial and is also a complication of bariatric surgery. The aim of this study is to establish which variables are associated with a higher prevalence of post-bariatric surgery anemia.

Methods: Retrospective cohort study involving 1999 patients submitted to bariatric surgery with a follow-up period of 4 years.

Variable Thresholds of Vitamin D Plasma Levels to Suppress PTH: the Effect of Weight and Bariatric Surgery.

Background: Serum 25-hydroxyvitamin D [25(OH)D] and parathormone (PTH) have an inverse relation. The 25(OH)D threshold required to maximally suppress PTH has been used as a marker of optimal vitamin D status. Obesity is associated with lower serum levels of 25(OH)D and higher levels of PTH; however, the relation between these hormones in this setting is not well established.