Obesity Sleeve Gastrectomy

This dataset contains anonymized clinical and laboratory data from a retrospective observational cohort of 340 adult women who underwent laparoscopic sleeve gastrectomy between 2020 and 2025 in southern Brazil. The data were collected from routine clinical follow-up and were used to investigate interval-based biochemical trajectories across the first postoperative year. Biochemical measurements were organized into five predefined clinical intervals: a preoperative baseline (0 days) and postoperative assessments at approximately 40, 120, 180, and 365 days after surgery. Due to heterogeneity in real-world follow-up schedules, the dataset was structured using an interval-based analytical framework, in which each participant contributes data to one or more postoperative intervals, without requiring complete longitudinal follow-up at the individual level. The dataset includes a comprehensive multisystem biochemical panel covering hematologic parameters, iron metabolism, protein markers, vitamins and minerals, metabolic markers, hepatic enzymes, inflammatory markers, and renal and endocrine indicators. Variables include, but are not limited to, hemoglobin, hematocrit, red blood cell indices, serum iron, ferritin, albumin, total protein, globulins, folate, vitamin B12, vitamin D, zinc, calcium, fasting glucose, lipid profile, liver enzymes (AST, ALT, GGT), C-reactive protein, creatinine, thyroid-stimulating hormone, and free thyroxine. All laboratory analyses were performed in accredited clinical laboratories as part of standard postoperative care, using validated analytical methods. No protocol-driven sampling or experimental intervention was conducted. Data were fully de-identified prior to analysis, and no personal identifiers are included in the dataset. This dataset supports the analyses presented in the associated manuscript entitled “Integrated Metabolic and Micronutrient Dynamics Across the First Postoperative Year: Interval-Based Profiling in 340 Brazilian Women Undergoing Sleeve Gastrectomy” . It is intended to facilitate reproducibility, secondary analyses, and comparative research on metabolic and nutritional adaptations following bariatric surgery in real-world clinical settings.