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Healthcare refers to the organized provision of medical services to individuals and communities to maintain or improve health. It encompasses a broad spectrum of services including preventive care, diagnosis, treatment, and rehabilitation, delivered by professionals such as doctors, nurses, therapists, and pharmacists. Modern healthcare integrates advanced technologies, patient-centered approaches, and evidence-based practices to ensure quality outcomes and improve quality of life. Systems of healthcare vary globally, ranging from publicly funded models to private insurance-based services, but all aim to promote wellness, manage disease, and support overall well-being.