BPG is committed to discovery and dissemination of knowledge
Randomized Controlled Trial
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. Jun 27, 2026; 18(6): 118979
Published online Jun 27, 2026. doi: 10.4240/wjgs.118979
Effects of long-term immunonutrition on postdischarge colorectal cancer surgery patients
Man DL Bao, Fei Huang, Pu Cheng, Zhao-Xu Zheng
Man DL Bao, Fei Huang, Pu Cheng, Zhao-Xu Zheng, Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100021, China
Author contributions: Bao MDL, Huang F, Cheng P, and Zheng ZX designed the overall concept and outline of the manuscript; Bao MDL and Huang F contributed to the discussion and design of the manuscript; Bao MDL and Cheng P contributed to the writing and editing of the manuscript, illustrations, and review of the literature; and all the authors have read and approved the final manuscript.
Institutional review board statement: This study was approved by the Medical Ethics Committee of National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 23/086-3825.
Clinical trial registration statement: This study is registered at www.chictr.org.cn. The registration identification number is ChiCTR2300071078.
Informed consent statement: All study participants or their legal guardians provided informed consent prior to study enrollment.
Conflict-of-interest statement: All the authors report no relevant conflicts of interest for this article. Nestlé Health Science China funded the immunonutrition products and partially supported the research activity concerning this study. Nestlé Health Science was not involved in the study design, collection, interpretation, or analysis of data, or the writing of the article. The authors declare no other conflicts of interest.
CONSORT 2010 statement: The authors have read the CONSORT 2010 Statement, and the manuscript was prepared and revised according to the CONSORT 2010 Statement.
Data sharing statement: Technical appendix, statistical code, and dataset available from the corresponding author at 3213780037@163.com.
Corresponding author: Zhao-Xu Zheng, MD, PhD, Professor, Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Science and Peking Union Medical College, No. 17 Panjiayuan Nanli, Chaoyang District, Beijing 100021, China. 3213780037@163.com
Received: January 19, 2026
Revised: January 30, 2026
Accepted: April 7, 2026
Published online: June 27, 2026
Processing time: 150 Days and 23.1 Hours
Core Tip

Core Tip: This randomized controlled trial compared long-term immunonutrition (IMN) with conventional oral nutritional supplements in postdischarge colorectal surgery patients. Radical colorectal cancer surgery induces persistent nutritional deficiency and immunosuppression that may worsen after discharge, yet most IMN studies focus on the short-term perioperative phase, resulting in a notable lack of long-term postdischarge data. After the intervention, nutritional and immunological parameters were comparable between the groups, while the IMN group had a significantly lower incidence of postoperative infectious complications. Our findings confirmed that prolonged postoperative oral IMN optimizes nutritional profiles, enhances immune competence, facilitates subsequent therapy preparation and reduces infection risk in colorectal cancer patients.

Write to the Help Desk