Popular myth has it that only the non-psychoactive CBD (Cannabidiol) component of the cannabis plant holds medicinal value, not the psychoactive THC (Tetrahydrocannabinol) property. The fact is that both CBD and THC have proven therapeutic properties. Cannabis is a naturally grown plant that has been used for medicinal benefits for thousands of years. It’s a safe and effective form of medicine for a wide range of people. The plant has medically proven benefits which explains why more people are willing to give cannabis a chance in hopes it will relieve a medical disease or condition with which they have been living. THC alone contains miraculous healing properties and benefits. Although it’s been suggested the most beneficial use of cannabis comes from using it in whole plant form (combining THC, CBD, and other cannabinoids), let’s look at how beneficial THC can be by itself. 

Further explained in the following link: https://www.learngreenflower.com/articles/219/8-amazing-benefits-of-thc