The study of how diet affects fitness and disease in human populations, or the science of public health nutrition is termed as Nutrition Epidemiology. It consists of measuring nutritional intake in groups of people and then inspecting disease rates.
To quantify the connection between diet and disease “Statistical models” are used. It also provides rigorous training in the organic features of nutrition, epidemiology, biostatistics etc. Nutrition epidemiology is human health in connection to nutrition.