Preventive medicine is a branch of medicine that focuses on promoting health and preventing disease through proactive measures such as vaccination, regular health screenings, lifestyle interventions, and education. The goal of preventive medicine is to reduce the risk of illness, disability, and premature death by identifying and addressing risk factors before they lead to health problems. This field encompasses a wide range of practices and strategies aimed at keeping individuals and populations healthy and thriving. Key areas of focus in preventive medicine include immunizations, smoking cessation, healthy diet and exercise, early detection and treatment of chronic conditions, and public health initiatives to address social determinants of health. Overall, preventive medicine plays a critical role in improving overall health outcomes and reducing healthcare costs by preventing or delaying the onset of disease.