{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,13]],"date-time":"2026-08-13T19:30:42Z","timestamp":1786649442941,"version":"build-2736575974"},"reference-count":42,"publisher":"Ovid Technologies (Wolters Kluwer Health)","content-domain":{"domain":["lww.com","ovid.com"],"crossmark-restriction":true},"short-container-title":[],"abstract":"Abstract<\/jats:title>\n \n Introduction:<\/jats:title>\n This study aimed to examine the impact of metabolic and bariatric surgery (MBS) on key micronutrients in patients with obesity over 10 years.<\/jats:p>\n <\/jats:sec>\n \n Patients and Methods:<\/jats:title>\n A retrospective chart review was carried out for individuals who had MBS from February 2013 to May 2022 at 11 centres. The micronutrient (iron, Vitamin B12, Vitamin D3 and calcium) levels were collected before surgery and up to 10 years afterwards.<\/jats:p>\n <\/jats:sec>\n \n Results:<\/jats:title>\n \n The data from 1675 individuals with a mean age of 43.09 \u00b1 11.93 years were analysed. The study population comprised 34.81% of males and 65.19% of females. There was an increase in the serum iron levels over 1 year (\n P<\/jats:italic>\n < 0.01), 3 years (\n P<\/jats:italic>\n < 0.01), 5 years (\n P<\/jats:italic>\n = 0.2175), 7 years (\n P<\/jats:italic>\n < 0.01) and 10 years (\n P<\/jats:italic>\n = 0.0998) after surgery. Similar results were observed for Vitamin B12 levels at 1 year (\n P<\/jats:italic>\n < 0.01), 3 years (\n P<\/jats:italic>\n < 0.01), 5 years (\n P<\/jats:italic>\n = 0.3083), 7 years (\n P<\/jats:italic>\n = 0.2817) and 10 years (\n P<\/jats:italic>\n = 0.2645). Vitamin D3 levels increased at 1 year (\n P<\/jats:italic>\n < 0.01), 3 years (\n P<\/jats:italic>\n < 0.01), 5 years (\n P<\/jats:italic>\n < 0.01), 7 years (\n P<\/jats:italic>\n = 0.0069) and 10 years (\n P<\/jats:italic>\n = 0.8179). However, calcium levels exhibited a downwards trend at 5 years (\n P<\/jats:italic>\n = 0.0008) post-surgery.\n <\/jats:p>\n <\/jats:sec>\n \n Conclusions:<\/jats:title>\n A high prevalence of micronutrient deficiency was observed amongst patients preoperatively, which improved following MBS.<\/jats:p>\n <\/jats:sec>","DOI":"10.4103\/jmas.jmas_462_25","type":"journal-article","created":{"date-parts":[[2026,4,13]],"date-time":"2026-04-13T08:02:41Z","timestamp":1776067361000},"update-policy":"https:\/\/doi.org\/10.1097\/lww.0000000000001000","source":"Crossref","is-referenced-by-count":1,"title":["Long-term nutritional outcomes after bariatric surgery: A multicentre study by the Obesity and Metabolic Surgery Society of India"],"prefix":"10.4103","author":[{"given":"Vivek","family":"Bindal","sequence":"first","affiliation":[{"name":"Department of Minimal Access, Bariatric and Robotic Surgery, Institute of Minimal Access, Bariatric and Robotic Surgery, Max Super Speciality Hospital, Ghaziabad, Uttar Pradesh, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"P. Praveen","family":"Raj","sequence":"additional","affiliation":[{"name":"Department of Bariatric Surgery, GEM Hospital, Coimbatore, Tamil Nadu, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Manish","family":"Khaitan","sequence":"additional","affiliation":[{"name":"NObesity, KD Hospital, Ahmedabad, Gujarat, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Priyanka","family":"Agarwal","sequence":"additional","affiliation":[{"name":"Department of Minimal Access, Bariatric and Robotic Surgery, Institute of Minimal Access, Bariatric and Robotic Surgery, Max Super Speciality Hospital, Ghaziabad, Uttar Pradesh, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Arun","family":"Prasad","sequence":"additional","affiliation":[{"name":"Department of Surgical Gastroentrology, Bariatric and Robotic Surgery, Indraprastha Apollo Hospital, New Delhi, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Atul N. C.","family":"Peters","sequence":"additional","affiliation":[{"name":"Department of GI, Minimal Access and Bariatric Surgery, Max Smart Super Speciality Hospital, Delhi, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mahendra","family":"Narwaria","sequence":"additional","affiliation":[{"name":"Department of Bariatric and Robotic Surgery, AB Plus Hospital, Ahmedabad, Gujarat, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sandeep","family":"Aggarwal","sequence":"additional","affiliation":[{"name":"Department of Surgery, All India Institute of Medical Sciences, Delhi, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"K. S.","family":"Kular","sequence":"additional","affiliation":[{"name":"Department of Bariatric Surgery, Kular Hospitals, Ludhiana, Punjab, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Randeep","family":"Wadhawan","sequence":"additional","affiliation":[{"name":"Department of GI, Minimal Access and Bariatric Surgery, Max Super Speciality Hospital, Delhi, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sarfaraz","family":"Baig","sequence":"additional","affiliation":[{"name":"Digestive Surgery Clinic, Kolkata, West Bengal, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Aparna Govil","family":"Bhaskar","sequence":"additional","affiliation":[{"name":"Metaheal - Laparoscopic and Bariatric Surgery Center, Mumbai, Maharashtra, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Abhishek","family":"Katakwar","sequence":"additional","affiliation":[{"name":"Department of Bariatric and Metabolic Surgery, AIG 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