There is no shortage of studies proving its effectiveness in treating nausea, glaucoma and intra-ocular eye pressure, migraine headaches, suppressed appetite in AIDS patients, and specific types of pain. Some studies also suggest applications in movement and neurologic disorders. In either event, synthetic THC does not share all the properties of the naturally occurring THC in marijuana, and we're not sure why. There are some significant parallels, but they are not identical. Marijuana's drawbacks, particularly in self-medicators, are equally well documented.
Spatial relationships become confused.
Driving becomes dangerous. You don't feel like doing much, with the exception of eating. Some researchers, including Nahas, find marijuana implicated in a wide variety of diseases, from cancer to immune system response. Still, many don't consider marijuana a serious health hazard. But you should be careful in assessing psychoactive drug interactions, no matter which side of the marijuana 'fence' you're on.