In this digital age we currently find ourselves in, it's hard to differentiate between someone who uses the Internet too much and someone with a full-blown addiction. While some mental health experts refuse to recognize Internet overuse as an addiction (others very much do), there's quite a bit of evidence that shows the World Wide Web's effect on Internet users’ brains is similar to heroin. Nowhere is this more prevalent than China, where an estimated 24 million people are addicted to the Internet.

Internet addiction in China has become such an epidemic that parents are starting to turn to controversial Internet addiction boot camps, where there are a strict set of rules, including diet and exercise routines; family therapy sessions; and virtually no Internet use. Dr. Tao Ran — a psychiatrist and military colonel who runs the Daxing Bootcamp in Bejing — says the physical symptoms his patients experience can include poor eyesight, back problems, and eating disorders, which are similar to that of a drug addicts.

China isn't the only country in Asia suffering from a crippling Internet addiction epidemic. According to the World Bank, South Korea has one of the world's largest population of Internet users, with around 83.8 percent of South Koreans having access. Similarly, in the United States, an estimated 87 percent of adults and 95 percent of teenagers are online.

Are you at risk? You can check to see if you or anyone else you know fits the model for Internet Use Disorder (IUD), here.