Health has a variety of definitions, which have been used for different purposes over time. In general, it refers to physical and emotional well-being, especially that associated with normal …

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View the latest health news and explore articles on fitness, diet, nutrition, parenting, relationships, medicine, diseases and healthy living at CNN Health.

Mar 21, 2025 · Find science-based health information on symptoms, diagnosis, treatments, research, clinical trials and more from NIH, the nation’s medical research agency.