19-year-old pop star Justin Bieber's arrest has raised questions over the effects of the limelight on young stars<br/> <br />Does global fame and all that comes with it in any way contribute to a pattern of substance abuse and run-ins with the law?<br/> <br />Bieber was released on bail on Thursday, after being arrested for drunk driving in Florida.<br/> <br />He could be facing six months in jail, though a lighter sentence is thought to be likely.<br/> <br />Police said he also admitted to consuming prescription drugs.<br/> <br />Dr Beverly Berg is a mental health therapist in Los Angeles; she says Bieber's arrest could benefit the teenager by forcing him to admit his problems.<br/> <br />SOUNDBITE. Dr Beverly Berg, mental health therapist, saying (English):<br/> <br />"If the law gets involved, the law makes you admit you have a problem, whether you believe it or not. Sometimes it's the law that forces people into really taking a look at what's going on."<br/> <br />Bieber isn't the first young star to find himself falling
