Forget blood transfusions, the fountain of youth could be closer to hand

There has been a lot of hype and hope over transfusing old people with young blood in an attempt to rejuvenate the body in a similar manner to earlier Heterochronic parabiosis experiments, where the circulatory systems of an old and a young mouse are linked and some level of rejuvenation was observed[1]. Many researchers initially thought that the positive results in these tests were due to there being pro-youthful signals in the young blood, however more recent research suggests that the likely reason is the dilution of pro-aging factors present in the old blood rather than there being any “secret sauce” in young blood.

http://www.leafscience.org