Pete Doherty has revealed he has type 2 diabetes. The Libertines rocker – who has been open about his struggle with drug addiction in the past – revealed that he has been diagnosed with the disease after trying to live a healthier lifestyle. He told The Guardian’s Saturday magazine: “I gave up the main poisons and my health improved. Then you get told alcohol and cheese and sugar are just as bad and you were healthier when you were on heroin.” His bandmate Carl Barat, 45, said: “Gluttony” and Pete agreed: “Yeah, I am a bit of a glutton. It’s not a joke. I’ve been diagnosed with type 2 diabetes…