There is not enough research on the suject because thay are expensive and there is no profit at the end of it. It is not all the other drugs the big pharmaceutical business is doing research on, they are the only capable of creating them, in other hand anyone can produce marijuana. The other thing, is that the permit to grow marijuana for experiment are not too easy to get... A research fund for this sound like an interesting thing to do, let me see if I can get some information on that subject.