In the United States, the United Kingdom, and other nations, cannabis-based medications have been legalized and are being used to treat patients with chronic illnesses like epilepsy for which there are no viable treatments at this time.
Due to the THC and other substances present in cannabis-based medicines, their usage has been outlawed in Japan. The recently passed legal change will permit individuals with incurable conditions to take cannabis-derived medications.
Additionally, it might encourage the use of cannabis plants for therapeutic purposes.
Since farmers who grow cannabis plants with approval from prefectural governors have chances to inhale cannabis components during harvest and other operations, there have been no consequences for cannabis usage.
Cannabis is seen as a “gateway drug” that initiates drug abuse, and its overuse has developed into a social issue, particularly among young people. As with other banned narcotics, the government therefore plans to tighten cannabis regulation in order to stop its use among youth.
Reference: Yahoo Japan『大麻草から製造の難病治療薬が使用可能に、法改正案が判明…乱用防ぐ「使用罪」も創設』