Quick Answer. An authorization letter is a type of legal document that can allow someone to claim a document on someone else's behalf. Claiming documents is just one potential use of authorization letters, which can also be used to sign documents, make agreements or participate in an event as an agent of another person. Keep Learning.
Pathological aging is the aging process that is brought on by the presence of disease, such as adult-onset diabetes or arthritis, and that may later bring on cardiovascular disease or osteoporosis. This is not considered normal aging. These conditions are due to heredity or lifestyle.
the process of growing old. Biologic aging results in part from a failure of body cells to function normally or to produce new body cells to replace those that are dead or malfunctioning.Normal cell function may be lost through infectious disease, malnutrition, exposure to environmental hazards, or genetic influences.ging is the normal transition time after that flurry of activity. Although there are quite a few age-related changes that tax the body, disability is not necessarily a part of aging. Health and lifestyle factors together with the genetic makeup of the individual, and determines the response to these changes.