Big Brother UK Using Vulnerable Contestants?

Today's Sun leads on various organisations slating Channel 4 for the current series of Big Brother. NOT because nearly every housemate makes you want to put a boot through the TV, but instead because there are now five housemates alleged to have mental health issues. The five are Shahbaz, Nikki, Lea, Pete and new arrival Sam, for various reasons. Surely Pete is the most sane (and likeable) person in the house though? But the Tourette's Syndrome Association have accused Channel 4 of 'using' him. [Stuart Dredge]