Theories of aging explore why and how we grow older. One prominent theory is the Telomere Theory, which suggests that the protective caps on our chromosomes shorten with each cell division, leading to aging. Another is the Free Radical Theory, which posits that damage from unstable molecules called free radicals accumulates over time, causing cellular deterioration. Another important perspective is the Programmed Aging Theory, which argues that aging follows a biological timetable, possibly influenced by genetic factors. In contrast, the Wear and Tear Theory suggests that aging results from accumulated damage to cells and tissues due to environmental stressors and lifestyle choices.