So much for the scary IQ "study" that claimed teens are vulnerable to an 8-point IQ loss if they use marijuana frequently. The findings were discredited by a thorough review of the data by an outside investigator. There are solid reasons that teens should not be using marijuana regularly, unless they are ill, and these horror stories only muddy the water. Whenever you see a report on a study that claims terrible harm from marijuana, be suspicious, very suspicious. There are numerous so-called clinical investigators who I call researchstitutes (prostituting researchers) who have access to hundreds of millions of dollars from the federal health bureaucracy to fund studies designed and calculated to find harm from marijuana. This is not honest research and the sad thing is that the investigators who pull these scams justify their dishonesty with 20th century reefer madness fallacies, they believe that the end goal of discouraging marijuana use justifies them torturing data and shading results to conform to their expectations. They conduct small studies with patients populations at risk for the maladies they want to associate with marijuana and they ignore contradictory evidence and highlight insubstantial evidence, taken out of context, that seems to offer confirmation of their beliefs. When one conducts small studies, confounding variables sometimes appear and stand out because of the small number of other subjects. When larger studies are done these anomalies disappear. The dishonest researchstitutes who promote disinformation about marijuana take the unusual results when they happen to appear and assert their importance in the face of contrary evidence. Unfortunately, most news reporters are not scientifically literate enough, or even curious enough to look at the actual studies behind the scary press releases. Thank goodness there are other more honest scientists willing to devote the time and resources to double check spurious claims by sleazy, money-grubbing federal henchmen. Oh, another way bogus results are generated is by injecting rats and mice with synthetic cannabinoids (similar to the "bath salts" marketed to avoid marijuana laws) and then claiming the negative results apply to human use of marijuana.