Aging, National Institute on
Aging, National Institute on: One of the US National Institutes of Health (NIH). The mission of the National Institute on Aging is to “lead a national program of research on the biomedical, social, and behavioral aspects of the aging process; the prevention of age-related diseases and disabilities; and the promotion of a better quality of life for all older Americans.”
The National Institute on Aging was founded in 1974. It is one of two institutes of the NIH based on life stages. The other is the National Institute of Child Health and Human Development (NICHD).
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- Agita
Agita: Heartburn, acid indigestion, an upset stomach or, by extension, a general feeling of upset. The word is Italian-American slang derived from the Italian “agitare” meaning “to agitate.”
- Agitated depression
Agitated depression: A major depressive disorder with restlessness and motor excitement. Agitated depression was once called melancholia agitata. It is now also known as mixed mania.
- Agnate
Agnate: 1. As a noun, a relative on the father’s side. 2. As an adjective, related on the father’s side. As opposed to enate (someone related on the mother’s side) From the Latin agnatus, the past participle of agnasci (to issue forth), from ad+ nasci (to be born).
- Agnosia
Agnosia: An inability to recognize sensory inputs such as light, sound, and touch). Agnosia is typically a result of brain injury. For example, damaging the back part of the brain can cause visual agnosia (inability to properly recognize objects by sight).
- Agonist
Agonist: A substance that acts like another substance and therefore stimulates an action. Agonist is the opposite of antagonist. Antagonists and agonists are key players in the chemistry of the human body and in pharmacology.