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<p>There is a constant argument about whether pot affects teen brains. According to this recent article it is alcohol drinking we should worry about not smoking pot.</p>
<p>[Teen</a> Marijuana Use May Show No Effect On Brain Tissue, Unlike Alcohol, Study Finds](<a href=“HuffPost - Breaking News, U.S. and World News | HuffPost”>Teen Marijuana Use May Show No Effect On Brain Tissue, Unlike Alcohol, Study Finds | HuffPost Los Angeles)</p>
<p>I do agree that if the OP’s son has identified that he has anxiety issues, then meeting with a counselor is a prudent thing to do.</p>