Over time this battery can cause the cells to look visible damaged, and eventually break through the cell wall to damage the nucleus which contains the vital DNA. Then when this DNA reproduces via mitosis (splitting down the centre to create two exact copies) it will spread the damage into the new cells, and more so when they divide. This can cause all sorts of problems and may eventually lead to the development and growth of cancer cells. In other areas such as the heart and nervous system where the cells do not divide or reproduce at all, any damage done to individual cells will be irreparable.
By consuming additional antioxidants then (particularly in older age when the body stops producing as many natural antioxidants) the individual can help stave off the visible signs of ageing, prevent against cancer, protect against heart disease and slow cognitive decline.