1. Prevalence of Vitamin D Depletion, and Associated Factors, among Patients Undergoing Bariatric Surgery in Southern Brazil
- Author
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Anderson Castro de Souza, Elisa Ruiz Fülber, Rogério Friedman, Natália Luiza Kops, Marco Aurélio Santana Batista Fleuri, and Manoela Astolfi Vivan
- Subjects
Adult ,Male ,medicine.medical_specialty ,Endocrinology, Diabetes and Metabolism ,Population ,Bariatric Surgery ,030209 endocrinology & metabolism ,medicine.disease_cause ,vitamin D deficiency ,Fasting glucose ,03 medical and health sciences ,0302 clinical medicine ,Prevalence ,Vitamin D and neurology ,Humans ,Medicine ,In patient ,Vitamin D ,education ,Inverse correlation ,education.field_of_study ,Nutrition and Dietetics ,business.industry ,Gastric bypass surgery ,Middle Aged ,Vitamin D Deficiency ,medicine.disease ,Obesity, Morbid ,Surgery ,Cross-Sectional Studies ,Dietary Supplements ,Female ,030211 gastroenterology & hepatology ,Seasons ,Multivitamin ,business ,Brazil - Abstract
Hypovitaminosis D is common, before and after gastric bypass surgery. The prevalence of hypovitaminosis D in a large group of candidates for bariatric surgery in Brazil and South America has not been studied. To evaluate the prevalence of hypovitaminosis D and associated factors in patients undergoing bariatric surgery in Southern Brazil. Cross-sectional study involving all patients presenting for bariatric surgery at Hospital de Clinicas de Porto Alegre, from January 2013 to June 2018. Data were extracted from the patients’ electronic medical records. Patients who were taking multivitamin supplements or vitamin D supplements, who had renal insufficiency, or had missing data for 25(OH) vitamin D [25(OH)D] levels were excluded. A total of 291 patients were included. Mean subjects’ age was 44.9 (SD 10.7) years, and BMI 49.3 (SD 8.3) kg/m2; 76.6% of the study patients were women, and 87.3% were white. More than half the patients (55.3%) were vitamin D deficient (serum 25(OH)D ≤ 19.9 ng/ml), and 37.1% had insufficient levels (20–29.9 ng/mL). Mean vitamin D level was 19.2 ng/mL (SD 7.6). An inverse correlation was found between 25(OH)D levels and BMI. Vitamin D deficiency was more prevalent in patients with higher BMI [PR 1.02; CI 95% (1.00–1.03)], higher fasting glucose [PR 1.01; CI 95% (1.00–1.01)], in nonwhite patients [PR 1.58; CI 95% (1.30–1.92)] and during autumn/winter season [PR 1.41; CI 95% (1.14–1.75)]. Prevalence of vitamin D insufficiency and deficiency is very high among patients presenting for bariatric surgery in Southern Brazil, and the known associated factors are confirmed in this population.
- Published
- 2019