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e. Middle age, or middle adulthood, is the age range of the years halfway between childhood and old age. [1] 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. [2][3][4][5] Many changes may occur between young adulthood and this stage. [6][7][8]
v. t. e. Old age is the range of ages for people nearing and surpassing life expectancy. People of old age are also referred to as: old people, elderly, elders, senior citizens, seniors or older adults. [1] Old age is not a definite biological stage: the chronological age denoted as "old age" varies culturally and historically. [2]
The timeline of human evolution outlines the major events in the evolutionary lineage of the modern human species, Homo sapiens, throughout the history of life, beginning some 4 billion years ago down to recent evolution within H. sapiens during and since the Last Glacial Period. It includes brief explanations of the various taxonomic ranks in ...
Transamerica defines "middle class" — a broad sociological term rather than a strict financial measure of income — as people earning $50,000 to $200,000 annually, which accounts for roughly 55 ...
Sociology. Gerontology (/ ˌdʒɛrənˈtɒlədʒi / JERR-ən-TOL-ə-jee) is the study of the social, cultural, psychological, cognitive, and biological aspects of aging. The word was coined by Ilya Ilyich Mechnikov in 1903, from the Greek γέρων (gérōn), meaning "old man", and -λογία (-logía), meaning "study of". [1][2][3][4] The ...
Staff for Brazil's National Institute of Social Security found that Pereira had a birth certificate stating her year of birth as 1890. However, this certificate was only approved in 1985, late in her life. Exaggerated longevity claims may be common in Pereira's village, as four out of the 80 inhabitants in the village are over 90 years old.
Tomiko Itooka (born 23 May 1908) of Japan is the world's oldest living person whose age has been validated. [2] John Tinniswood (born 26 August 1912) of the United Kingdom is the world's oldest living man whose age has been validated. [2]
Right now, the average human life expectancy in the U.S. is 77.5 years, according to the Centers for Disease Control and Prevention (CDC). However, the numbers are different across genders—the ...