An analysis of the relationship between domestic trade costs and the dietary quality of Chinese residents

Abstract Domestic trade flow in China is an indispensable factor affecting food availability to the public. The aim of this study is to focus on the cost of domestic trade within China and the dietary health of Chinese residents. Based on the China-regional input-output tables and the CHNS micro-database, we calculated China’s domestic trade costs and Healthy Eating Index (HEI) of Chinese urban and rural residents. We find that domestic trade costs are negatively correlated with residents’ whole grain and mixed beans, vegetables, fruits, beef, mutton, poultry, and aquatic products consumption, having a significant negative influence on residents’ dietary quality score. Domestic trade costs can influence residents’ food consumption structure by affecting income and traditional market scores. Domestic trade costs have a greater negative influence on the dietary quality of rural residents, low-income residents, and elderly residents. The results suggest that reducing domestic trade costs increased residents’ food consumption and improved their dietary quality. Increasing the people’s income and stimulating traditional markets can alleviate the decline in dietary quality of the population caused by an increase in domestic trade costs.