Pete Doherty has admitted that years of drug and alcohol abuse have impacted his health – revealing to Louis Theroux that he is “a very sick man”.The Libertines and Babyshambles singer opened up about the toll his lifestyle has taken on his health in a new series hosted by Theroux, titled Louis Theroux Interviews.In the episode, which is available now on iPlayer, the ‘00s indie icon spoke candidly about his life and career – particularly his previous struggles with addiction that led to him being arrested multiple times for possession.During one part of the interview, Doherty got up to take a swig from a bottle of blackcurrant rum, before starting to cough and clutch his chest.“You are looking at a very sick man,” Doherty told Theroux when asked about how his health is. “I’ve battered it, haven’t I, I’ve fucking caned it.”“[The] heroin and the crack… I surrendered to that.