300 young morphine addicts in Copenhagen were personally followed up 7 years after their first referral for treatment. The tracking rate was 93.7%. Of the original population, approximately 2% died yearly, i.e. 16%. Each year 5-6% ceased drug abuse, and in 1980, 39% were characterized as being socially well adjusted. In all, 20% remained heavy drug users, though some had changed to other drugs.