Public health is the science of protecting and improving the health of people in communities. It focuses on preventing diseases, promoting healthy lifestyles, and ensuring access to healthcare services. Public health professionals work on various issues, such as vaccination programs, nutrition education, and disease surveillance, to keep populations healthy and safe. One key aspect of public health is the study of how factors like environment, socioeconomic status, and behavior influence health outcomes. By understanding these connections, public health initiatives can target specific groups and create effective strategies to reduce health disparities and improve overall well-being in society.