Before revision: Damage-related factors DNA damage theory of ageing: DNA damage is thought to be the common basis of both cancer and ageing, and it has been argued that intrinsic causes of DNA damage are the most important causes of ageing.
After revision: Main article: DNA damage theory of agingDamage-related factors DNA damage theory of ageing: DNA damage is thought to be the common basis of both cancer and ageing, and it has been argued that intrinsic causes of DNA damage are the most important causes of ageing.