The newest anti-aging trend sounds straight out of a vampire movie: injecting young blood into old people.
As alarming as that may sound, human trials have started to test whether blood from young people improves the health of older folks.
One ongoing trial, based in California, is infusing "older" people (ages 35 and above) with the blood of younger people (ages 16-25). The older group is then tested a month later for improvements in blood-borne indicators associated with aging and disease, such as insulin and hemoglobin levels.
While the science is still out on young blood's benefit to humans, a body of research does indicate, in animal studies at least, that young blood can improve organ and tissue function and prolong the life of older animals.