China's Health Ministry has ordered a hospital to stop using electric-shock therapy to cure youths of Internet addiction, saying there was no scientific evidence it worked. Linyi Mental Health Hospital in eastern Shandong province used the treatment as part of a four-month program that has so far treated nearly 3,000 youths, the China Youth Daily newspaper has reported, citing the psychiatrist who runs it, Yang Yongxin. The ministry said in a statement posted on its Web site late Monday there is no domestic or international clinical evidence that electric-shock therapy helps cure Internet addiction. Electric-shock therapy is most often used to treat severe depression. Chinese psychologists say symptoms of Internet addiction include being online more than six hours a day - playing video games and looking at pornography rather than studying or working - and getting frustrated when unable to get online. Hospital spokesman Yang Shuyun told the Beijing News newspaper Tuesday the hospital had stopped administering electric-shock therapy after seeing the ministry's comments. He said it was only part of the overall program to treat patients, which also included medicine and psychological counseling. Patients are charged 5,500 yuan ($805) a month. Computer and Internet use has risen dramatically as China's economy has grown in recent years. According to an estimate by China's National People's Congress, about 10 percent of the country's under-18 users are addicted to the Internet, although it is not recognized as a clinical condition.