One of the most well-known, outspoken critics of ADHD is Tom Cruise. He referred to psychiatry as a "quack" field and was quoted as saying, ""You know what? I'm sure drug dealers on the street, in some way, they are making money. That's what I equate it to. Here is the thing: you have to understand, with psychiatry, there is no science behind it. And to pretend that there is a science behind it is criminal." His views on ADHD and Ritalin are just as severe and his comments on national...