They've only trialled mice so far, who appeared years younger than their actual age 7 months after the treatment.
Humans could live to be 150 years old, thanks to a therapy that apparently reverses aging.
The Salk Institute has been testing its cellular rejuvenation technology, which it claims can "undo" the damages of strokes, cancer, and heart attacks on our bodies.
They've only trialled mice so far, who appeared years younger than their actual age 7 months after the treatment.