NEW BLOOD: Transfusions Reverse Aging Effects On Hearts In Mice. “‘When the protein … was injected into old mice, which develop thickened heart walls in a manner similar to aging humans, the hearts were reduced in size and thickness, resembling the healthy hearts of younger mice.’ Through a type of transfusion called parabiotic or ‘shared circulation’ in mice — one old and sick, the other young and well — they managed to reverse this age-associated heart disease. From there, they isolated an active agent, GDF-11, present in the younger mouse but absent in the older, which reverses the condition when administered directly. They are also using the agent to restore other aged/diseased tissues and organs. Human applications are expected within six years.” Faster, please.