Hello there Welcome to HealthcareMagic. Methamphetamine, a drug of abuse, causing euphoria/ stimulant effect, is known to cause seizures, hypertension(high blood pressure), certain abnormalities of lung( like pneumothorax), skin infections, kind of heart attacks liver and even kidney failure are noted. But am sorry to say, havent seen or come across literature showing direct correlation between this drug and cancers. Howsoever, I would suggest you to refrain from it as much possible, as this in no case , going to do you any good than giving a transient period of pleasure.Hope, my answer was convincing enough. Hope you able to get out of its grip.Take care.