A groundbreaking global study has shed light on the stark disparities in early-onset gastric cancer (EOGC), a form of the disease that disproportionately affects individuals in their most productive years. Despite a global decline in gastric cancer-related deaths, the study reveals a concerning trend: inequalities between high- and low-income regions are widening. This is particularly alarming as it highlights the need for targeted interventions in regions where the disease burden is growing, despite limited healthcare access and population growth.
The research, led by a team from Chongqing Medical University in China, analyzed data from the Global Burden of Disease (GBD) 2021 to provide the first comprehensive global analysis of EOGC from 1990 to 2021. The findings, published in Cancer Biology & Medicine, reveal a complex picture of EOGC, with smoking and high-salt diets identified as the main risk factors. These factors account for a significant proportion of disability-adjusted life years (DALYs), which measure the years of healthy life lost due to disease.
The study found that, in 2021, approximately 125,000 new EOGC cases, 78,000 deaths, and 3.86 million DALYs were recorded worldwide. The incidence peaked in individuals aged 45-49 years, with males showing a higher prevalence, while females under 30 exhibited a greater mortality risk. Despite a global decline in age-standardized incidence and mortality rates between 1990 and 2021, several sub-Saharan African countries experienced rising rates.
The disparities in EOGC are strongly linked to socioeconomic development. High-income regions have achieved steady reductions through screening and health education, while low-income regions face growing burdens due to limited healthcare access and population growth. Projections suggest a continued global decline through 2040, but the study emphasizes the need for tailored interventions in low-resource settings to reduce disparities.
The study underscores the importance of integrating lifestyle modification, early detection, and public health policy to address EOGC globally. High-risk regions such as East Asia should promote dietary interventions and early endoscopic screening, while low-income areas require investment in healthcare systems and public awareness programs. Tobacco taxation, food labeling, and salt reduction campaigns could further reduce exposure to key risk factors.
The research team, led by Wei Wang from Chongqing Medical University, calls for future research combining epidemiological data with genomic and environmental monitoring to help identify susceptible populations and optimize precision prevention strategies against EOGC. The study highlights the need for a multi-faceted approach to address the complex challenge of EOGC, which affects individuals during their most productive years.
