Cannabis or marijuana has been accompanying mankind for more than 10,000 years, which has found the myriad of uses of this plant, either at recreational, medicinal or industrial level. The first evidences of cannabis were found in Asia, so it is not strange that the first written references we have about cannabis come from this area, especially from China and India. Although the first traces of the use of hemp date back to about ten thousand years before Christ, the first written reference to its medicinal use is found quite later, around the year 2737 BC. Still, it isn't difficult to imagine that the therapeutic traits of cannabis had been discovered discovered rather earlier.