CBD seems to naturally counteract the marijuana high. Numerous studies suggest that CBD acts to reduce the intoxicating effects of THC, such as memory impairment and paranoia. People who have used both cannabis and pure THC for medical purposes report a preference for natural cannabis when it comes to side effects. It’s thought that CBD plays a role in this preference. Both CBD and THC have been found to present no risk of lethal overdose. However, to reduce potential side effects, medical users may be better off using cannabis with higher levels of CBD.