In spite of up to the minute developments in genetics and molecular biology, the ambiguities that manage the span of life of human beings are still there to be untied. A number of assumptions, which plunge into two major groups: “Programmed and Error Theories”, have been suggested to thoroughly describe the procedure of growing older, but none of them looks to be completely acceptable. These illustrations could act together with one another in a complicated manner. By recognizing and examining the present and latest theories of aging, it might ...