In recent years, there has been much debate over whether marijuana, an illegal drug, can provide patients with a level of therapeutic relief comparable to existing pharmaceutical treatments. While this idea is hardly new, it is advanced by some proponents as deserving more scientific inquiry. Advocates for the medical use of marijuana contend that there is already sufficient scientific evidence to justify rescheduling marijuana under the Controlled Substances Act, a change that would give it the necessary legal recognition to be used for medicinal purposes. This has already occurred in the...