Just to remind you, drug industries, and other industries have been going after pot for years to keep it illegal. To think that these kinds of studies are not intentionally targeted for these industries, as well as the idiot law enforcement agencies that for some reason or another think pot is the worst possible drug ever known to man kind, is arrogant. I did read you said about more studies that should be conducted, however I would like to see them done by outside U.S. researchers , depending if they are independent or linked to helping the US in there propaganda. This study has been done time and time again, in the US among the Medical industry, and there has always been some ill will intention behind it, however there are still independent research groups within the US that have always found these claims to be false. Science should be takin in moderation not just worshiped, science has itself always had its own intentions in mind. I do accept science theories, and read into any study with moderation, not believing it entirely, because there is another study that comes out months later, or other factors that scientists were unaware of or did not take into account. These being teenagers there brains are still obviously developing, but there are several teenagers that have become influential adults through out history, who smoked during there teenage years. Im not attacking you, or science, but there is always something behind these studies to continue the anti-legalize machine, they should study the effects on teenagers that are abusing there parents, or grandparents prescription drugs you will probably get the same results, probably already did the same with tobacco and saw the same results. It would be much better if they did a pot, prescription drug (the ones popularly abused by teens), other popular street drugs (among teens) study at the same time, to see the overall results, that is the problem I have with this study!