I have just accepted that that in my favorite sports there is some sort of drug use.
Be it energy drink/bars, food that gives you more carbs pr kg than other stuff, etc etc etc. All the stuff that they eat has been made to make them less dehydrated, gives them a boost, sugar rush, run for longer or what ever it does to make them win. It is all chemicals and drugs if you look at it that way
And they also taking pain killers to cover for the aches and pains, that for us others would have us off the bike, playing field much much earlier. Ain't that drug use?
And then there is the plain old stubbornness that makes them run, ride or jump tru' the pain barrier or over the "I can't be arsed" wall. Which when I see that wall, I stop and have a rest, not pot of energy stuf and pain killers and go come on you old git you just gotta.
If someone wants to cheat they will cheat and will find a loop hole in the system being that with or without the passport.
My favorite drugs atm is gummy bears *) and chocolate milk, gets me up and over Col d'Aspin
Though the pro's gets up and over in 3rd of that time, but hey I'm happy I had a god ride.
*) just look at the E number in that, if that is not classified as drugs then I don't know what drugs is.