Zach Klein is the personal documentarian of Dr. Raphael Mechoulam, the Israeli scientist who discovered tetrahydrocannabinol in 1964 and whose team uncovered the components of the endocannabinoid system. Klein shared the use of medical cannabis in Israel , including several very inspiring stories. He showed a Parkinson’s patients with severe tremors that completely stopped after just a couple inhalations of cannabis. He shared results of Alzheimer’s and autism patients who dramatically improved after using cannabis, as well as sharp reductions in the consumption of conventional pharmaceuticals, which had been causing an array of debilitating side effects. Israeli citizens have benefited immensely from the controlled regulation and distribution of medical cannabis products. Patients have access to strains with high levels of tetrahydrocannabinol, high levels of cannabidiol, or equivalent quantities of both cannabinoids, which enables optimal treatment.