There is a lot of anecdotal 'evidence' on the internet about the effectiveness of cannabis oil in cancer. There are thousands of YouTube videos online about success stories of cancer patients who claim to be cured by cannabis. However, it is impossible to determine from these stories whether healing has taken place, whether regular chemotherapy was used and whether cannabis actually contributed to it or not. 'A cured cancer patient who uses 10% cbd oil is not the same as a cancer patient who has been cured through cannabis. Moreover, the large groups of cannabis users who do not cure their cancer are usually not taken into account. " One of the best-known promoters of cancer cannabis oil is Canadian engineer Rick Simpson. He is honored as a kind of guru on the internet as the discoverer of the alleged effects of cannabis oil on tumors. Simpson goes far in his beliefs and makes astonishing statements, he claims that most cancer patients do not die because of the disease itself, but because of the chemotherapy they receive - in this way, he hurts patients by advising them not to undergo regular therapy. Patients who do not survive his therapy would have been harmed too much by the chemotherapy they received before. He also claims that the cannabis oil that he propagates leads to cure in terminal cancer patients in 70% of the cases. He provides no evidence for this miraculously high success in patients. It is a nonsense claim that gives false hope to treated patients. "Not patentable" Alternative healers often claim that the pharmaceutical industry ignores cannabis because substances in cannabis plants cannot be patented. The anecdotal 'evidence' of the alleged effect of cannabis oil is therefore often associated with conspiracy theories about the pharmaceutical industry. However, the argument used is false a number of pharmaceutical companies are investigating purified forms of cannabinoids and making the compounds more effective by designing synthetic cannabinoids that are better absorbed into the body, for example. \tThese synthetic fabrics can indeed be patented. For example, there are currently only two patented drugs on the US market that contain synthetic THC (dronabinol). In addition, another cannabinoid (rimonabant) was admitted to Europe for a while and was soon withdrawn from the market due to psychological side effects. Hundreds of scientists in both public and private research institutions around the world are currently investigating the medical effects of cannabinoids, often involving synthetic compounds. The popularity of CBD has been increasing in recent years. With the increase in attention, the confusion about naming and legality also increases. What difference is there now between cannabis oil, cannabis oil and CBD oil and is there a difference at all? And is the oil actually legal? In this article we try to lift a tip of the veil. In recent years, Cannabidiol (CBD), one of the many substances in the cannabis plant, appears to have interesting qualities. In addition to a tempering effect on the effect of THC, the substance also appears to have a positive effect on the medical level.