there are certain phenomenon that we can control and few that we can't. aging is one such phenomenon, we can't control it, can't stop it, can't escape it, we can simply let it happen. in simplest words, it's a process that makes you older but significantly has lot more impact over you body and lifestyle.
aging is associated with changes in biological, physiological, environmental and behavioral processes resulting in declines in function of the senses and activities of daily life and increased susceptibility to and escalated frequency of disease, frailty, or disability. in fact, advancing age is the major risk factor for a number of chronic diseases in humans as well.
while medical research certainly seems to be on the verge of finding promising strategies to reverse the aging process, meanwhile we can adopt to regular physical exercise and healthy diet to slow down the process.