This in turn usually implies that the person is over the retirement age, which varies according to country.
Synonyms include old age pensioner or pensioner in British English, and retiree and senior in American English.
However, for its study of old age in Africa, the World Health Organization (WHO) set 55 as the beginning of old age.
At the same time, the WHO recognized that the developing world often defines old age, not by years, but by new roles, loss of previous roles, or inability to make active contributions to society.
In his Ethics, he wrote that "old people are miserly; they do not acknowledge disinterested friendship; only seeking for what can satisfy their selfish needs." For Thomas More, on the island of Utopia, when people are so old as to have "out-lived themselves" and are terminally ill, in pain, and a burden to everyone, the priests exhort them about choosing to die.Chronological age may differ considerably from a person's functional age.The distinguishing marks of old age normally occur in all five senses at different times and different rates for different persons.The age at which these discounts are available varies between 55, 60, 62 or 65, and other criteria may also apply.Sometimes a special "senior discount card" or other proof of age needs to be obtained and produced to show entitlement.In commercial contexts, where it may serve as a marketing device to attract customers, the age is often significantly lower.In Canada, the OAS (Old Age Security) pension is available at 65 (the Conservative government of Stephen Harper had planned to gradually increase the age of eligibility to 67, starting in the years 2023–2029, although the Liberal government of Justin Trudeau is considering leaving it at 65), and the CPP (Canada Pension Plan) as early as age 60.The AARP allows couples in which one spouse has reached the age of 50 to join, regardless of the age of the other spouse.The distinguishing characteristics of old age are both physical and mental.Old age refers to ages nearing or surpassing the life expectancy of human beings, and is thus the end of the human life cycle.Terms and euphemisms include old people (worldwide usage), seniors (American usage), senior citizens (British and American usages), older adults (in the social sciences), the elderly, and elders (in many cultures—including the cultures of aboriginal people).