There is some evidence to support this theory. For instance, the longer an animal lives, the more antioxidants it has in its body. Also, some studies show that antioxidants may help prevent heart disease, some cancers, cataracts, and other health problems that are more common as people get older. SOD pills have no effect on the body. They are broken up into different substances during digestion.
More research is needed before specific recommendations can be made.
Every day some DNA is damaged and most of the time it is repaired. But more and more damage occurs with age, and it may be that DNA repair, never 100 percent perfect, falls further and further behind. If so, the damage that does not get repaired and builds up could be one of the reasons that people age. But DNA and RNA are like SOD tablets. When they are taken by mouth, they are broken down into other substances and cannot get to cells or do any good.