I don't know if you've ever seen the effects of Meth first-hand, but it's not exactly the Fountain of Youth. More like the Fountain of Fug. Watch the entire American Meth documentary, a true classic narrated by Val Kilmer.
American Meth Documentary
Beware of Mr. Baker
The Island President
Into the Zone: The Story of the Cacophony Society
McLaren’s “How To Build A Supercar” Documentary
Phoenix: From A Mess To The Masses