Body composition changes after bariatric surgery in adults with obesity and hepatic steatosis

doi:10.4240/wjgs.v18.i7.118280

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World Journal of Gastrointestinal Surgery

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1948-9366

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Baishideng Publishing Group Inc, 7041 Koll Center Parkway, Suite 160, Pleasanton, CA 94566, USA

Retrospective Cohort Study

Copyright: ©Author(s) 2026. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial (CC BY-NC 4.0) license. No commercial re-use. See permissions. Published by Baishideng Publishing Group Inc.

World J Gastrointest Surg. Jul 27, 2026; 18(7): 118280
Published online Jul 27, 2026. doi: 10.4240/wjgs.v18.i7.118280

Table 1 Sample characteristics in the preoperative and postoperative periods, mean ± SD

Variables	Preoperative, n = 91	Postoperative, n = 91	Δ	P value
Age	36.385 ± 9.54	36.385 + 9.54	0	1
APRI	0.309 ± 0.269	0.285 ± 0.14	0	0.454
FIB4	0.619 ± 0.329	0.667 ± 0.314	-0.024	0.320
BMI (kg/m²)	42.989 ± 6.043	30.86 ± 4.783	0.048	< 0.001^b
ALT	27.911 ± 20.2	23.471 + 10.496	-12.13	0.004^b
AST	36.457 ± 27.807	29.11 + 17.487	-7.347	0.134
Platelets	287.725 ± 67.307	255.318 ± 56.218	-4.44	0.001
Hemoglobin	13.739 ± 1.384	13.349 + 1.667	-32.407	0.857
Fasting glucose	98.208 ± 20.305	84.919 + 13.194	0.802	< 0.001^b
Triglycerides	159.043 ± 77.76	91.334 + 28.751	-13.289	0.038^a
Total cholesterol	197.773 ± 36.307	156.32 + 30.516	-70.106	0.513
HDL cholesterol	46.975 ± 12.984	48.884 + 13.265	-41.985	0.069
Creatinine	0.863 + 0.698	0.818 + 0.263	1.909	0.018^a
Uric acid	6.807 ± 8.195	4.739 + 3.248	0.045	0.201
Vitamin D	24.298 ± 9.154	35.756 + 50.159	-2.069	0.004^b
Vitamin B12	454.135 ± 177.37	541.359 + 299.518	11.458	0.003^b
Ferritin	208.871 ± 221.093	143.534 + 134.435	87.224	0.463
Albumin	4.26 ± 0.327	4.121 + 0.596	-65.337	0.982

^aP < 0.05.

^bP < 0.01.

Paired Student’s t-test. ALT: Alanine aminotransferase; APRI: Aspartate aminotransferase to platelet ratio index; AST: Aspartate aminotransferase; BMI: Body mass index; FIB-4: Fibrosis-4 index; HDL: High-density lipoprotein.

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Citation: Schmitt LKT, Ferreira LF, Mottin CC, Lacerda BG, Zubiaurre PR, Teixeira JM, Marroni CA, Fernandes SA. Body composition changes after bariatric surgery in adults with obesity and hepatic steatosis. World J Gastrointest Surg 2026; 18(7): 118280
URL: https://www.wjgnet.com/1948-9366/full/v18/i7/118280.htm
DOI: https://dx.doi.org/10.4240/wjgs.v18.i7.118280

Schmitt LKT, Ferreira LF, Mottin CC, Lacerda BG, Zubiaurre PR, Teixeira JM, Marroni CA, Fernandes SA. Body composition changes after bariatric surgery in adults with obesity and hepatic steatosis. World J Gastrointest Surg 2026; 18(7): 118280 [DOI: 10.4240/wjgs.v18.i7.118280]

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