Disease development refers to the process by which a health condition progresses from initial exposure to a pathogen or risk factor to the manifestation of symptoms. This process can involve various stages, including infection, immune response, and eventual disease onset. Factors such as genetics, environment, and lifestyle can influence how quickly or severely a disease develops. Understanding disease development is crucial for prevention and treatment. Early detection can lead to better outcomes, as interventions may halt or slow progression. Research in fields like epidemiology and public health helps identify risk factors and develop strategies to manage diseases effectively.