Theories of Disease Causation

Theories of disease causation explain why illnesses occur. They include: 1. **Germ Theory**: Diseases are caused by microorganisms like bacteria and viruses. 2. **Genetic Theory**: Certain diseases result from inherited genetic mutations. 3. **Environmental Theory**: External factors, such as pollution or lifestyle, contribute to disease risk. 4. **Multifactorial Theory**: Diseases arise from a combination of genetics, environment, and lifestyle choices. 5. **Psychosomatic Theory**: Psychological factors can influence physical health. Understanding these theories helps in prevention, diagnosis, and treatment of diseases, emphasizing that health is affected by various biological, environmental, and lifestyle influences.