Ageing might seem an inevitable part of life, but scientists are closer than ever to finding drugs and interventions to fight back against the ravages of time.
Within just a few years medications could be available that extend both lifespan and healthspan by many years.
But what is happening in the body during the ageing process and how can it be stopped?
Some experts believe we have a built-in obsolescence, or kill-switch that kicks in to make sure we don’t take vital resources from younger generations, while others say it is simply wear and tear.
Another theory suggests that because natural selection only works up to the point of reproduction, it will always be impossible to evolve strategies…