A good place to begin -the Federal Government. The National Institute of Health...

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2828614/

Cannabinoids as novel anti-inflammatory drugs
Prakash Nagarkatti,† Rupal Pandey,* Sadiye Amcaoglu Rieder,* Venkatesh L Hegde, and Mitzi Nagarkatti

Abstract
Cannabinoids are a group of compounds that mediate their effects through cannabinoid receptors. The discovery of Δ9-tetrahydrocannabinol (THC) as the major psychoactive principle in marijuana, as well as the identification of cannabinoid receptors and their endogenous ligands, has led to a significant growth in research aimed at understanding the physiological functions of cannabinoids. Cannabinoid receptors include CB1, which is predominantly expressed in the brain, and CB2, which is primarily found on the cells of the immune system. The fact that both CB1 and CB2 receptors have been found on immune cells suggests that cannabinoids play an important role in the regulation of the immune system. Recent studies demonstrated that administration of THC into mice triggered marked apoptosis in T cells and dendritic cells, resulting in immunosuppression. In addition, several studies showed that cannabinoids downregulate cytokine and chemokine production and, in some models, upregulate T-regulatory cells (Tregs) as a mechanism to suppress inflammatory responses. The endocannabinoid system is also involved in immunoregulation. For example, administration of endocannabinoids or use of inhibitors of enzymes that break down the endocannabinoids, led to immunosuppression and recovery from immune-mediated injury to organs such as the liver. Manipulation of endocannabinoids and/or use of exogenous cannabinoids in vivo can constitute a potent treatment modality against inflammatory disorders. This review will focus on the potential use of cannabinoids as a new class of anti-inflammatory agents against a number of inflammatory and autoimmune diseases that are primarily triggered by activated T cells or other cellular immune components.

Absolutely worth the read. FYI, my wife has Crohns Disease. What infuriates me is that we suffer from 100 years of cannabis suppression with a prohibition on research for most of that 100 years. I have lost family members to cancer and there is, as mentioned, my wife's Crohns.

Just imagine if research into Cannabinoids had progressed these last 100 years and, then, contemplate my rage!