ArticleBMC public health2026
Prevalence and determinants of anemia among individuals with a history of gastric cancer: a nationwide population-based study.
Article in BMC public health, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundAnemia is a common complication among individuals with a history of gastric cancer, particularly those who have undergone gastrectomy. While previous studies have largely focused on early post-operative periods in hospital-based cohorts, studies on prevalence and associated factors of anemia in long-term, community-dwelling gastric cancer survivors are limited. Thus, this study aimed to estimate the prevalence and association between anemia and anthropometric, functional, and nutritional factors among Korean adults with a history of gastric cancer.
methodsThis cross-sectional study analyzed data from the Korea National Health and Nutrition Examination Survey (2016–2020). Adults ≥ 30 years who self-reported a physician diagnosis of gastric cancer were included. Anemia was defined as hemoglobin < 13 g/dL (males) or < 12 g/dL (females). Anthropometric, laboratory, and dietary variables were compared between individuals with and without anemia, and multivariable logistic regression identified factors associated with anemia.
resultsAmong individuals with a history of gastric cancer, the weighted prevalence of anemia was 31.9%. Anemia prevalence was highest among underweight and lowest among obese participants (55.6% vs. 10.5%, p = 0.01). Individuals with anemia had significantly lower body mass index, handgrip strength (HGS), and protein intake than those without anemia. Low HGS (OR = 2.89; 95% CI 1.41–5.92) and insufficient protein intake (OR = 3.26; 95% CI 1.53–6.97) were associated with higher odds of anemia, whereas obesity was independently associated with lower odds of anemia (AOR = 0.17; 95% CI 0.04–0.70).
conclusionsNearly one-third of long-term gastric cancer survivors had anemia, which was linked to low muscle strength and inadequate protein intake. These findings highlight the potential importance of integrating nutrition and functional-health assessments into long-term care to help prevent anemia and improve well-being in this population.
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