Inside North Korea, observers say, many use meth in place of expensive and hard-to-obtain medicine. “People with chronic disease take it until they’re addicted,” says one worker for a South Korea-based NGO, who requested anonymity in order to avoid jeopardizing his work with defectors. “They take it for things like cancer. This drug is their sole form of medication,” says the NGO worker, who has interviewed hundreds of defectors in the past three years. A former bicycle smuggler who defected in 2009 told NEWSWEEK of seeing a doctor administering meth to a friend’s sick father. “He took it and could speak well and move his hand again five minutes later. Because of this kind of effect, elderly people really took to this medicine.”