Scientists make mice grow old and young again. Are people next?

Harvard scientists say they have found the switch that allows them to advance or reverse ageing at will. Photo: Getty

An Australian scientist appears to have cracked the code for controlling the processes of ageing. It may prove to be the biggest science story of 2023.

David Sinclair, a professor of genetics at Harvard Medical School, and a team of more than 60 researchers engineered mice to prematurely and quickly age.