Irvine Welsh Trust for social inclusion in Edinburgh. In "Crime", Ray Lennox (from Welsh's previous work, "Filth") is recovering from a mental breakdown induced by occupational stress and cocaine abuse, and a particularly horrifying child sex murder case back in Edinburgh. The story takes place in Florida. In 2012 Welsh published a prequel to "Trainspotting", titled "Skagboys". Set in Leith in the early 1980s, it introduces the "Trainspotting" characters and follows them as they fall into heroin addiction. Given as a series of linked short stories, the book is also interspersed with brief commentaries on contemporary British politics. In particular, the consequences
Heroin users, compared to morphine, reportedly stems from its perceived different effects. Short-term addiction studies by the same researchers demonstrated that tolerance developed at a similar rate to both heroin and morphine. When compared to the opioids hydromorphone, fentanyl, oxycodone, and pethidine (meperidine), former addicts showed a strong preference for heroin and morphine, suggesting that heroin and morphine are particularly susceptible to abuse and addiction. Morphine and heroin were also much more likely to produce euphoria and other positive subjective effects when compared to these other opioids. In the United States, heroin is not accepted as medically useful. Under the generic