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. Author manuscript; available in PMC: 2012 Apr 1.
Published in final edited form as: Biochim Biophys Acta. 2011 Feb 2;1813(4):634–644. doi: 10.1016/j.bbamcr.2011.01.029

Fig. 2.

Fig. 2

The free radical theory of aging: ROS formation leads to damaged mitochondrial DNA and proteins. The ROS induced damage reduces mitochondrial function and lifespan. This reduction in mitochondrial function with aging can be prevented by CR, and can prolong lifespan in several species.