Middle age

Middle age is the age range of the years halfway between childhood and old age. The exact range is subject to academic debate, but the term is commonly used to denote the age range from around 45 to around 65 years. This phase of life is marked by gradual physical, cognitive, and social decline in individuals as they age.

This article is about the stage of human development. For the historical period, see Middle Ages. For other uses, see Middle Ages (disambiguation).
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