epidemiology studies

Epidemiology studies investigate how diseases spread, who they affect, and why. Researchers observe patterns and factors—such as age, environment, or lifestyle—to understand causes and risk factors. These studies help identify sources of health problems, evaluate prevention strategies, and guide public health policies. They can range from examining individual cases to large populations, and use various methods, including surveys and experiments, to gather data. Overall, epidemiology aims to improve health outcomes by understanding the dynamics of diseases within communities and informing effective interventions.