Nutritional status and related factors in gastric cancer patients after gastrectomy: a cross-sectional study.

<b>Introduction: </b> Gastrectomy due to gastric cancer induces metabolic changes in body composition, directly affecting nutritional status. <br><br><b>Aim:</b> The aim of this cross-sectional study was to investigate the nutritional status and related factors in gastric cancer patients after total and subtotal gastrectomy.<br><br><b>Materials and methods:</b> A total of 41 patients who underwent gastrectomy due to gastric cancer were included: 20 patients (48.8%) with total gastric resection and 21 patients (51.2%) with subtotal resection were enrolled. The evaluation was performed over a follow-up period ranging from two to four years after surgery during routine oncological monitoring visits. The laboratory tests, bioimpedance parameters, physical activity, and quality of life were evaluated.<br><br><b>Results:</b> The only statistically significant differences included BMI, fat percentage, fat mass, and metabolic age in the subtotal gastrectomy group. Overall, post-gastrectomy patients showed suboptimal vitamin D concentration and low physical activity level and were found to be at risk of malnutrition assessed with prealbumin concentration and total lymphocyte count.<br><br><b>Discussion:</b> The nutritional status and life quality do not significantly differ between total and subtotal gastric cancer patients.<br><br><b>Conclusions:</b> The nutritional status and life quality do not significantly differ between total and subtotal post-gastrectomy patients in long-term follow-up. The analysis of selected parameters suggests that post-gastrectomy patients are at risk of malnutrition.<br><br><b>Study significance:</b> The presented study brings better insight into the nutritional status of gastric cancer patients after gastrectomy in long-term follow-up.