Stem Cell Shots Reverse Aging in Mice

ABC News :
...Researchers at the University of Pittsburgh Medical Center genetically altered mice to make them age faster, making them old and weak in a span of 17 days. The scientists then injected the mice with stem cell-like cells taken from the muscle of young, healthy mice.
The result was they reversed the aging process. The rapidly aging mice lived up to three times longer, dying after 66 days, rather than 28 days. The cell injection also appeared to make the animals healthier, improving their muscle strength and brain blood flow.
In recent years, scientists have agreed that aging in both animals and humans begins when stem cells lose their ability to rejuvenate the body's tissues. While aging is universal, some researchers believe it may also be reversible......

But laboratory success with mice is a far cry from success with humans.
"One must be very cautious in extending findings in mouse progeroid models to normal human aging," said Dr. Amy Wagers, associate professor of stem cell and regenerative biology at Harvard University. "These models are very different from physiological aging, and so it remains an open question whether such phenomenon may be relevant to natural aging symptoms as well." .........
"It's not going to be the fountain of youth, but it's teaching us a lot of biology that will help us conceptualize how to stay healthy and functional," Niedernhofer said.

Source/ Read More: http://abcnews.go.com/Health/stem-cells-turn-back-clock-aging-mice/story?id=15280185