Theories of Aging
One theory of aging is the free radical theory and mitochondrial DNA damage. Mitochondria are organelles within cells that are responsible for respiration, which promotes energy production using oxygen and simple sugars to produce adenosine triphosphate, the article explains. The DNA is located in a place with little protection and cannot repair itself which can lead to aging skin. The free radicals are atoms or molecules containing unpaired electrons that initiate a damaging chain reaction resulting in DNA crosslinking that leads to aging and may contribute to cancer genesis, the article continues … read more