Youth-drug can 'reverse' ageing in animal studies
- US scientists have performed a dramatic reversal of the ageing process in animal studies.
They used a chemical to rejuvenate muscle in mice and said it was the equivalent of transforming a 60-year-old's muscle to that of a 20-year-old - but muscle strength did not improve.
Their study, in the journal Cell, identified an entirely new mechanism of ageing and then reversed it.
Other researchers said it was an "exciting finding".