I am 41 years old and do not take any prescription medicines...blah, blah, blah...took a a lot of non-prescription ones, but that's neither here nor there...blah, blah, blah...and I can tell you some stories about people that didn't listen to the medical profession and they are not what I have heard but experienced.
My anecdotal evidence is worth as much as yours, i.e. bugger all.