Public health is the science and practice of promoting and protecting the health of individuals and populations. Public health practitioners work to prevent disease, promote health and wellness, and protect communities from health threats. Public health involves a wide range of activities, including conducting research, developing public health policies, implementing public health programs, and monitoring and evaluating the effectiveness of public health interventions. Public health is a multidisciplinary field that draws on various disciplines, including epidemiology, sociology, psychology, and anthropology. Public health is concerned with the health of populations rather than the health of individual patients and focuses on preventing health problems before they occur.

Public health professionals have a range of knowledge and skills that can be applied to UX (user experience) research. For example, public health professionals are trained in the collection and analysis of data, which is a critical skill in UX research. Public health professionals are also trained in the use of a variety of research methods, such as surveys, experiments, or observational studies, which can be useful in UX research. In addition, public health professionals have expertise in conducting research with vulnerable populations, such as children, older adults, or individuals with disabilities, which can be relevant in UX research. Finally, public health professionals are trained in the development and implementation of health interventions, which can be useful in the design and evaluation of digital products and services.