If you or your teenager is addicted to cell phone use, it could be a sign of a bigger problem. Dr. Jee Hyan Ha, a South Korean doctor, has completed a survey of school-aged children. He found that the students who used their mobile phones the most (90 times a day or more, including voice and SMS) are the same students that tended to score highest on a psychological test designed to measure the level of depression that a person is suffering from. He also found that the highest users had self-identity issues, so they likely turned to the heavy phone usage to make themselves feel popular. None of the heavy users, however, were found to be clinically depressed.
There have been studies of this type of thing before, though they have often switched the causation around â€“ that extreme cell phone usage causes depression. Either way, you might want to take a look in the mirror if your phone is always stuck to your ear.