Spatial Analysis of Nutrition-Related Factors Associated with Gastric Cancer

Gastric cancer remains a significant global health challenge, with incidence rates varying widely across different regions. Nutritional patterns play a crucial role in its development, particularly diets low in vegetables and high in salt and saturated fats. These dietary habits contribute to obesity, which, along with low physical activity, increases gastric cancer risk. This study aims to explore the spatial distribution of gastric cancer in relation to three interconnected nutrition-related factors: obesity (measured by BMI), low physical activity, and low vegetable consumption. Geographically Weighted Poisson Regression (GWPR) was applied using national cancer registry data to examine spatial variation in gastric cancer incidence. The model focused on obesity, low physical activity, and inadequate vegetable intake. Obesity was treated as a nutritional outcome linked to poor diet quality and caloric imbalance. A Gaussian kernel function and corrected Akaike Information Criterion (AICc) were used to assess model fit and regional variation. The spatial analysis showed distinct regional patterns: areas with higher obesity, lower physical activity, and reduced vegetable intake had increased gastric cancer morbidity. These findings highlight the significant role of nutrition and lifestyle in regional disparities and emphasize the need for region-specific health strategies.

کلیدواژه ها:

Gastric Neoplasms ، Obesity/complications ، Vegetarian Diet/statistics & numerical data ، Physical Activity ، Nutritional Status ، Spatial Analysis ، Poisson Distribution