Sjöström L. Review of the key results from the Swedish Obese Subjects (SOS) trial - a prospective controlled intervention study of bariatric surgery. J Intern Med. 2013;273:219–34. Available from: http://www.ncbi.nlm.nih.gov/pubmed/23163728
Colquitt JL, Pickett K, Loveman E, Frampton GK. Surgery for weight loss in adults. Cochrane Database Syst Rev. 2014;8:CD003641. Available from: http://www.ncbi.nlm.nih.gov/pubmed/25105982
Welbourn R, le Roux CW, Owen-Smith A, Wordsworth S, Blazeby JM. Why the NHS should do more bariatric surgery; how much should we do? BMJ. 2016;353:i1472. Available from: http://www.ncbi.nlm.nih.gov/pubmed/27169605
Picot J, Jones J, Colquitt JL, Gospodarevskaya E, Loveman E, Baxter L, et al. The clinical effectiveness and cost-effectiveness of bariatric (weight loss) surgery for obesity: a systematic review and economic evaluation. Health Technol Assess. 2009;13:1–190, 215–357, iii–iv. Available from: http://www.ncbi.nlm.nih.gov/pubmed/19726018
Kwok CS, Pradhan A, Khan MA, Anderson SG, Keavney BD, Myint PK, et al. Bariatric surgery and its impact on cardiovascular disease and mortality: a systematic review and meta-analysis. Int J Cardiol. 2014;173:20–8. Available from: https://doi.org/10.1016/j.ijcard.2014.02.026
Obesity: Identification, Assessment and Management. Clinical Guideline (CG189). London: National Institute for Health and Care Excellence; 2014. Available from: https://www.nice.org.uk/guidance/cg189/resources/obesity-identification-assessment-and-management-pdf-35109821097925
Via MA, Mechanick JI. Nutritional and micronutrient care of bariatric surgery patients: Current Evidence Update. Curr Obes Rep. 2017;6:286–96. Available from: http://www.ncbi.nlm.nih.gov/pubmed/28718091
O’Kane M, Pinkney J, Aasheim ET, Barth JH, Batterham RL, Welbourn R, et al. BOMSS guidelines on perioperative and postoperative biochemical monitoring and micronutrient replacement for patients undergoing bariatric surgery. London: British Obesity & Metabolic Surgery Society; 2014. Available from: http://www.bomss.org.uk/wp-content/uploads/2014/09/BOMSS-guidelines-Final-version1Oct14.pdf
Damms-Machado A, Friedrich A, Kramer KM, et al. Pre- and postoperative nutritional deficiencies in obese patients undergoing laparoscopic sleeve gastrectomy. Obes Surg. 2012;22:881–9. Available from: https://www.ncbi.nlm.nih.gov/pubmed/22403000
Chakhtoura MT, Nakhoul NN, Shawwa K, Mantzoros C, El Hajj Fuleihan GA. Hypovitaminosis D in bariatric surgery: a systematic review of observational studies. Metabolism. 2016;65:574–85. Available from: http://www.ncbi.nlm.nih.gov/pubmed/26805016
van der Beek ESJ, Monpellier VM, Eland I, et al. Nutritional deficiencies in gastric bypass patients; incidence, time of occurrence and implications for post-operative surveillance. Obes Surg. 2015;25:818–23. Available from: https://www.ncbi.nlm.nih.gov/pubmed/25330868
Ablett AD, Boyle BR, Avenell A. Fractures in adults after weight loss from bariatric surgery and weight management programs for obesity: systematic review and meta-analysis. Obes Surg. 2019;29:1327–42. Available from:. https://doi.org/10.1007/s11695-018-03685-4.
Wei J-H, Lee W-J, Chong K, et al. High incidence of secondary hyperparathyroidism in bariatric patients: comparing different procedures. Obes Surg. 2018;28:798–804. Available from:. https://doi.org/10.1007/s11695-017-2932-y.
Peters T, Toelle P, Gebhart M, et al. Risk factors for secondary hyperparathyroidism after bariatric surgery. Clin Rev Bone Miner Metab. 2014;12:228–33. Available from:. https://doi.org/10.1007/s12018-014-9173-6.
Liu C, Wu D, Zhang J-F, Xu D, Xu W-F, Chen Y, et al. Changes in bone metabolism in morbidly obese patients after bariatric surgery: a meta-analysis. Obes Surg. 2016;26:91–7. Available from: https://doi.org/10.1007/s11695-015-1724-5
Stein EM, Strain G, Sinha N, Ortiz D, Pomp A, Dakin G, et al. Vitamin D insufficiency prior to bariatric surgery: risk factors and a pilot treatment study. Clin Endocrinol (Oxf). 2009;71:176–83. Available from: http://www.ncbi.nlm.nih.gov/pubmed/19018785
Santos D, Lopes T, Jesus P, et al. Bone metabolism in adolescents and adults undergoing Roux-en-Y gastric bypass: a comparative study. Obes Surg. 2019;29:2144–50. Available from:. https://doi.org/10.1007/s11695-019-03797-5.
Geoffroy M, Charlot-Lambrecht I, Chrusciel J, Gaubil-Kaladjian I, Diaz-Cives A, Eschard J-P, et al. Impact of bariatric surgery on bone mineral density: observational study of 110 patients followed up in a specialized center for the treatment of obesity in France. Obes Surg. 2019;29:1765–72. Available from: http://www.ncbi.nlm.nih.gov/pubmed/30734230
Li Z, Zhou X, Fu W. Vitamin D Supplementation for the prevention of vitamin D deficiency after bariatric surgery: a systematic review and meta-analysis. Eur J Clin Nutr. 2018;72:1061–70. Available from: http://www.ncbi.nlm.nih.gov/pubmed/29288249
Webb AR, Kazantzidis A, Kift RC, Farrar MD, Wilkinson J, Rhodes LE. Meeting vitamin D requirements in White Caucasians at UK latitudes: providing a choice. Nutrients. 2018;10:497. Available from: http://www.ncbi.nlm.nih.gov/pubmed/29673142
NHS Commissioning Board Clinical Reference Group for Severe and Complex Obesity. Clinical commissioning policy: complex and specialised obesity surgery. Leeds: NHS Commissioning Board; 2013. Available from: https://www.england.nhs.uk/wp-content/uploads/2016/05/appndx-6-policy-sev-comp-obesity-pdf.pdf
Pathology at Wigan and Salford (PAWS) Department of Clinical Biochemistry User Guide. Salford: Pathology at Wigan and Salford; 2016 [cited 2019 Apr 27]. Available from: https://www.srft.nhs.uk/EasysiteWeb/getresource.axd?AssetID=2824
O’Kane M, Jassam N, Barth J, Day A, Bowles S, MacKenzie F, et al. Albumin-adjusted calcium: a position paper. London: The Association for Clinical Biochemistry and Laboratory Medicine; 2015. Available from: http://acb.org.uk/docs/default-source/committees/clinical-practice/guidelines/acb-adjusted-calcium-position-paper-march-2015.pdf
Francis R, Aspray T, Fraser W, Macdonald H, Patel S, Mavroeidi A, et al. Vitamin D and bone health: a practical clinical guideline for patient management. Camerton: Royal Osteoporosis Society; 2018. Available from: https://theros.org.uk/healthcare-professionals/tools-and-resources/clinical-guidance/documents/vitamin-d-and-bone-health-in-adults/
Liu Y, De A. Multiple imputation by fully conditional specification for dealing with missing data in a large epidemiologic study. Int J Stat Med Res. 2015;4:287–95. Available from: http://www.ncbi.nlm.nih.gov/pubmed/27429686
Switzer NJ, Marcil G, Prasad S, Debru E, Church N, Mitchell P, et al. Long-term hypovitaminosis D and secondary hyperparathyroidism outcomes of the Roux-en-Y gastric bypass: a systematic review. Obes Rev. 2017;18:560–6. Available from: https://doi.org/10.1111/obr.12525
Compher CW, Badellino KO, Boullata JI. Vitamin D and the bariatric surgical patient: a review. Obes Surg. 2008;18:220–4. Available from: http://www.ncbi.nlm.nih.gov/pubmed/18176832
Peterson LA, Zeng X, Caufield-Noll CP, Schweitzer MA, Magnuson TH, Steele KE. Vitamin D status and supplementation before and after bariatric surgery: a comprehensive literature review. Surg Obes Relat Dis. 2016;12:693–702. Available from: http://www.ncbi.nlm.nih.gov/pubmed/27036669
Pereira-Santos M, Costa PRF, Assis AMO, Santos CAST, Santos DB. Obesity and vitamin D deficiency: a systematic review and meta-analysis. Obes Rev. 2015;16:341–9. Available from: https://doi.org/10.1111/obr.12239
Roberts C, Steer T, Maplethorpe N, Cox L, Meadows S, Nicholson S, et al. National diet and nutrition survey: results from years 7 and 8 (combined) of the rolling programme (2014/2015–2015/2016). London: Public Health England; 2018. Available from: https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file-/699241/NDNS_results_years_7_and_8.pdf
Weaver CM, Gordon CM, Janz KF, Kalkwarf HJ, Lappe JM, Lewis R, O'Karma M, Wallace TC, Zemel BS. The National Osteoporosis Foundation’s position statement on peak bone mass development and lifestyle factors: a systematic review and implementation recommendations. Osteoporos Int. 2016;27:1281–386. Available from: https://doi.org/10.1007/s00198-015-3440-3
Vitamin D and Health. London: Scientific Advisory Committee on Nutrition; 2016. Available from: https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/537616/SACN_Vitamin_D_and_Health_report.pdf
Beckman LM, Earthman CP, Thomas W, Compher CW, Muniz J, Horst RL, et al. Serum 25(OH) vitamin D concentration changes after Roux-en-Y gastric bypass surgery. Obesity (Silver Spring). 2013;21:E599-606. Available from: http://www.ncbi.nlm.nih.gov/pubmed/23526677
Pickett-Blakely O, Young K, Carr RM. Micronutrients in nonalcoholic fatty liver disease pathogenesis. Cell Mol Gastroenterol Hepatol. 2018;6:451–62. Available from: http://www.ncbi.nlm.nih.gov/pubmed/30294653
Lespessailles E, Toumi H. Vitamin D alteration associated with obesity and bariatric surgery. Exp Biol Med (Maywood). 2017;242:1086–94. Available from: http://www.ncbi.nlm.nih.gov/pubmed/28103699
Garofalo C, Borrelli S, Minutolo R, Chiodini P, De Nicola L, Conte G. A systematic review and meta-analysis suggests obesity predicts onset of chronic kidney disease in the general population. Kidney Int. 2017;91:1224–35. Available from: http://www.ncbi.nlm.nih.gov/pubmed/28187985
Jean G, Souberbielle JC, Chazot C. Vitamin D in chronic kidney disease and dialysis patients. Nutrients. 2017;9. Available from: http://www.ncbi.nlm.nih.gov/pubmed/28346348
Cheng S, Massaro JM, Fox CS, Larson MG, Keyes MJ, McCabe EL, et al. Adiposity, cardiometabolic risk, and vitamin D status: the Framingham heart study. Diabetes. 2010;59:242–8. Available from: http://www.ncbi.nlm.nih.gov/pubmed/19833894
Coates PS, Fernstrom JD, Fernstrom MH, Schauer PR, Greenspan SL. Gastric bypass surgery for morbid obesity leads to an increase in bone turnover and a decrease in bone mass. J Clin Endocrinol Metab. 2004;89:1061–5. Available from: http://www.ncbi.nlm.nih.gov/pubmed/15001587
DiGiorgi M, Daud A, Inabnet WB, Schrope B, Urban-Skuro M, Restuccia N, et al. Markers of bone and calcium metabolism following gastric bypass and laparoscopic adjustable gastric banding. Obes Surg. 2008;18:1144–8. Available from: http://www.ncbi.nlm.nih.gov/pubmed/18335295
Mechanick JI, Youdim A, Jones DB, Garvey WT, Hurley DL, McMahon MM, et al. Clinical practice guidelines for the perioperative nutritional, metabolic, and nonsurgical support of the bariatric surgery patient – 2013 update: cosponsored by American Association of Clinical Endocrinologists, The Obesity Society, and American Society for Metabolic & Bariatric Surgery. Obesity (Silver Spring). 2013;21 Suppl 1:S1–27. Available from: https://www.ncbi.nlm.nih.gov/pubmed/23529939
Saltzman E, Karl JP. Nutrient deficiencies after gastric bypass surgery. Annu Rev Nutr. 2013;33:183–203. Available from: https://doi.org/10.1146/annurev-nutr-071812-161225
Dewey M, Heuberger R. Vitamin D and calcium status and appropriate recommendations in bariatric surgery patients. Gastroenterol Nurs. 2011;34:367–74. Available from: http://www.ncbi.nlm.nih.gov/pubmed/21979398
Dix CF, Bauer JD, Wright ORL. A systematic review: Vitamin D status and sleeve Gastrectomy. Obes Surg. 2017;27:215–25. Available from: http://www.ncbi.nlm.nih.gov/pubmed/27815862
Madsen LR, Espersen R, Ornstrup MJ, Jørgensen NR, Langdahl BL, Richelsen B. Bone health in patients with type 2 diabetes treated by Roux-en-Y gastric bypass and the role of diabetes remission. Obes Surg. 2019;29:1823–31. Available from: http://www.ncbi.nlm.nih.gov/pubmed/30719648
Svanevik M, Risstad H, Hofsø D, Blom-Høgestøl IK, Kristinsson JA, Sandbu R, et al. Bone turnover markers after standard and distal Roux-en-Y gastric bypass: results from a randomized controlled trial. Obes Surg. 2019; Available from: http://www.ncbi.nlm.nih.gov/pubmed/31065919