Healthcare includes the prevention, diagnosis, treatment, and management of illness, injury, and disease to promote overall well-being and quality of life. It involves a broad spectrum of services, including medical, dental, mental health, and preventive care, provided by healthcare professionals such as doctors, nurses, pharmacists, and therapists. Healthcare systems may vary across regions and countries, but their primary goal is universal: to ensure access to timely, effective, and affordable healthcare services for individuals and communities. Ultimately, healthcare aims to optimize health outcomes, alleviate suffering, and enhance the overall health and welfare of populations.