How digital infrastructure development affects residents' health: A quasi-natural experiment based on the “Broadband China” strategy

Health not only concerns human well-being but also affects China's long-term development and social stability. Based on the quasi-natural experiment of the “Broadband China” strategy and the data of CFPS from 2010 to 2020, this study examines the underlying mechanism of digital infrastructure development on residents' health, as well as the macro and micro heterogeneity between them. The study finds that digital infrastructure contributes to residents' health. Mechanism tests confirm that increasing residents' income and enhancing medical services are underlying approaches. Digital infrastructure is conducive to the health of middle-aged people and rural residents. In areas with heavy air pollution and the eastern region, the impact of digital infrastructure on residents' health is more prominent. This study breaks through the existing qualitative research on digital technology in the healthcare sector, integrates both micro and macro perspectives, and enriches the empirical evidence in the field of digital health. It also contributes to guiding the in-depth practice of digital health in China, enhancing the digital health management level, thus supporting the realization of “Healthy China” blueprint.