Drug studies are based on the efficacy and safety of a given drug for a large enough number of people that makes it lucrative for the drug companies to sell and gives confidence to medical practitioners to prescribe it. It works, in it's most basic form, on the one standard deviation principle. That is, if a drug is safe and efficacious for about 66% of those tested, it's approved.
However, drug testing as it stands now does nothing for the individual who, for reasons of individual differences, cannot tolerate TCB in it's chemical form or for whom it does not work. In many individuals, smoking cannibis in its herbal form, which contains natural TCB works whereas chemical TCB taken in tablets doesn't or the tablets make them sick. With the millions of people with cancer, AIDS, multiple sclerosis and other diseases that cause nausea and loss of appetite, smoking marijuana is the only way they can get relief from the horrendous symptoms of these diseases.
Gezando, you've been asking about studies testing the safety and efficacy of cannabis. Take a look at the following 89 studies on PubMed under just "cannabis treatment nausea":HERE
Aloft, I second 4DK about your wonderful post.