Scientists have long known how to make cells younger—at least in the sense that adult cells can be converted into pluripotent stem cells very similar to those found in embryos. While this capability has been foundational for biological research, these methods aren’t viable for anti-aging technologies, for a few reasons.
“You don't want to have a pluripotent cell in your body, because it can become all types of cells,” says Oliver Brüstle, a professor who studies stem cells at Germany’s Bonn University.
