Comment Not quite the "Quadrupling of life span".... (Score 2) 178
... that they got from another study: http://www.grg.org/SMelov.htm
but at least these mice weren't genetically engineered to only live a week to begin with so this result may have a (lot) more relevance.
Fortunately despite the worries of the (first!) poster, hopefully we won't descend into a civilization where the old literally becomes a vampiritic parasite on the young. They've already identified, isolated and synthetically produced (the?) protein which causes this effect so we'll be able to get the benefits without bloodletting. Still makes (made?) a great premise for science fiction/vampire movies.
As an aside, I'm impressed by how Harvard, a decade or two ago, seemed to make the decision not to go into (what I thought) was the trendy/hot science of genetic engineering but instead has invested hundreds and hundreds of millions of dollars into becoming the(?) center for stem cell research. Meanwhile, genetic engineering seemed to have been sidetracked by "junk DNA" and epigenetics and in general the overwhelming complexity of the human genome (although the invention of CRISPR is a major major advance). Was it obvious to biologists that this was the right decision? Go Crimson!