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 functioning of the …

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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.

Healthline: Medical information and health advice you can trust. An obesity doctor shares how she counsels patients. Our new, free online tool can help you build healthy habits. Consider these...

May 15, 2025 · In 1946, the World Health Organization (WHO) defined health with a phrase that modern authorities still apply: “Health is a state of complete physical, mental, and social well-being and not...

Everyday Health inspires and empowers people to live their healthiest lives, every day, through trusted, medically reviewed information and expert health advice from the nation's leading...

Nov 13, 2025 · health, in humans, the extent of an individual’s continuing physical, emotional, mental, and social ability to cope with his or her environment. This definition is just one of many that are …

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Find information on health conditions, wellness issues, and more in easy-to-read language on MedlinePlus, the up-to-date, trusted health information site from the NIH and the National Library of …