CBD oil affects brain activity, but not in the same way that THC, the main psychoactive ingredient in marijuana, does.
CBD oil interacts with two receptors, namely CB1 and CB2, to reduce pain and the effects of inflammation.
CB2 also plays a role in a person’s immune system.
Rheumatoid arthritis involves the immune system attacking the tissue in your joints.
Therefore, this relationship to the immune system could explain why CBD oil seems to work well for rheumatoid arthritis symptoms.