In 2009 Elizabeth H. Blackburn, Carol W. Greider, Jack W. Szostak were awarded the Nobel Prize for the discovery of telomeres and telomerase which was discovered in the 1980's. Telomeres are important, and eventually if they get to short, a cell will die. What kind of lifestyle changes impact the expression of telomerase? https://www.livescience.com/39691-lifestyle-change-reverse-ageing-cells.html.