In your opinion, which one of the biological theories best explains why we age? Explain.

 

The programmed theories imply that aging follows a biological timetable that is regulated by changes in gene expression that affect the systems responsible for maintenance, repair and defense responses. Programmed ageing theories consider ageing to ultimately be the result of a biological mechanism or programme that purposely causes or allows deterioration and death in order to obtain a direct evolutionary benefit achieved by limiting lifespan beyond a species-specific optimum lifespan.