PHILADELPHIA (CBS) — Could the secret to eternal youth be found in blood transfusions from young people? Some claim that transfusions with “young blood” from teenagers can reverse the aging process. It’s being tested in patients over the age of 35 as part of a clinical trial called ambrosia, where people paid $8,000 to get the rich growth factors found in bloods plasma platelets. “There are pretty much people from most states, people from overseas, people from Europe and Australia,” Dr. Jesse Karmazin said. Results of the trial have not been published. Dr. Karmazin, who plans to open a business...