biostudies-literatureUnknown112(7)Saarinen IFinnish Cultural FoundationEVO FoundationTurku University HospitalSatakunta Regional FundMary and Georg C. Ehrnrooth FoundationPaulo Foundation<h4>Background</h4>Long-term data on the prevalence of nutritional deficiencies after laparoscopic sleeve gastrectomy (LSG) and laparoscopic Roux-en-Y gastric bypass (LRYGB) in RCTs are lacking. The aim of this study was to compare nutritional deficiencies and adherence to vitamin supplements after LSG and LRYGB at 10 years.<h4>Methods</h4>This was a predefined secondary analysis of the Finnish SLEEVEPASS (LSG versus LRYGB for severe obesity) multicentre RCT, with 10-year nutritional laboratory measurements and completed questionnaires on micronutrient supplement use, to assess the prevalence of micronutritional and macronutritional deficiencies and adherence.<h4>Results</h4>Of 240 patients (121 LSG patients and 119 LRYGB patients), 228 were available for 10-year follow-up. Of these 228 paThe British journal of surgeryznaf132https://www.ebi.ac.uk/biostudies/studies/S-EPMC12231607biostudies-literatureNutritional deficiencies after sleeve gastrectomy and Roux-en-Y gastric bypass at 10 years: secondary analysis of the SLEEVEPASS randomized clinical trial.PMC12231607Nuutila PHurme SSalminen PSaarinen IStrandberg MHelmio MJuusela RJuuti AGronroos SfalseNutritional deficiencies after sleeve gastrectomy and Roux-en-Y gastric bypass at 10 years: secondary analysis of the SLEEVEPASS randomized clinical trial.<h4>Background</h4>Long-term data on the prevalence of nutritional deficiencies after laparoscopic sleeve gastrectomy (LSG) and laparoscopic Roux-en-Y gastric bypass (LRYGB) in RCTs are lacking. The aim of this study was to compare nutritional deficiencies and adherence to vitamin supplements after LSG and LRYGB at 10 years.<h4>Methods</h4>This was a predefined secondary analysis of the Finnish SLEEVEPASS (LSG versus LRYGB for severe obesity) multicentre RCT, with 10-year nutritional laboratory measurements and completed questionnaires on micronutrient supplement use, to assess the prevalence of micronutritional and macronutritional deficiencies and adherence.<h4>Results</h4>Of 240 patients (121 LSG patients and 119 LRYGB patients), 228 were available for 10-year follow-up. Of these 228 pa2025-01-01T00:00:00Z2025 Jul2026-07-04T03:21:32.672Z2026-07-04T03:16:25.475ZS-EPMC122316074061378710.1093/bjs/znaf132