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Ageing (or aging in American English) is the process of becoming older. The term refers mainly to humans , many other animals , and fungi, whereas for example, bacteria, perennial plants and some simple animals are potentially biologically immortal .
Aging is therefore presumed to be a byproduct of evolution, but why mortality should be selected for remains a subject of research and debate. Programmed cell death and the telomere "end replication problem" are found even in the earliest and simplest of organisms. [35] This may be a tradeoff between selecting for cancer and selecting for aging ...
But biologists don’t believe that aging and death are programmed in the sense that a fertilized egg is programmed to develop into a human being. Instead, evolution has optimized a lifespan ...
Aging is characterized by a progressive loss of physiological integrity, leading to impaired function and increased vulnerability to death. The hallmarks of aging are the types of biochemical changes that occur in all organisms that experience biological aging and lead to a progressive loss of physiological integrity, impaired function and, eventually, death.
A noninvasive cheek swab test could help predict aging, risk of death. Paul Ian Cross, PhD. October 8, 2024 at 6:00 AM ... Scientists have long known that aging varies widely among individuals ...
Researchers believe that adopting eight healthy behaviors — identified by the American Heart Association as Life’s Essential 8 — can slow the aging process and reduce the risk of heart ...
Old age, death, and frailty are closely linked, with approximately half the deaths in old age preceded by months or years of frailty. [128]: 3, 19 Older Adults' Views on Death is based on interviews with 109 people in the 70–90 age range, with a mean age of 80.7. Almost 20% of the people wanted to use whatever treatment that might postpone death.
As what the Buddha instructed King Pasenadi of Kosala about aging and death in the Pabbatopama Sutta (SN 3.25): Like massive boulders, mountains pressing against the sky, moving in from all sides, crushing the four directions, so aging and death come rolling over living beings: noble warriors, brahmins, merchants, workers, outcastes, & scavengers.