ABSTRACT
The word aging does not give a good feeling to most of us because of problems and diseases associated with aging. The history of the world is replete with tales of individuals trying to stave off aging and death. Many individuals take megadoses of vitamin E, drink kombucha tea, and so on, all in the hope of ‹nding the “fountain of youth.” Wealthy people go to private European medical centers for lamb cell injections. According to social, behavioral, physiological, morphological, cellular, and molecular changes, aging can be considered in many different ways. Aging in its broadest sense is the continuous and irreversible decline in the ef‹ciency of various physiological processes once the reproductive phase of life is over (Balcombe and Sinclair, 2001). In recent years, aging has become the social and political agenda. Aging stories, particularly antiaging therapies, are a big attraction in newspapers and magazines (Laura, 2005). It has attracted a high level of attention from all over the world; the research agenda is focused on aging for the 21st century (Giacomoni, 2005).
