Medical science has come a long way in the last 50 years.
Advances in micro-technology mean fewer people are subjected to invasive procedures. An even smaller number are having to have entire medical teams shrunk down and injected via miniature submarine into their bloodstream.
In fact the number is zero.
But after watching today's classic film, The Fantastic Voyage, you may wish that wasn't the case.
Ant Timpson tells Sunrise all about The Fantastic Voyage.