CNN Inside Man August 19, 2013 08:34:00
>> there's something else that addiction experts believe is likely happening in the brain. when you smoke pot, the feel-good chemicals that make up marijuana called cannabinoids, remember them? they cause your brain to stop producing its own natural cannabinoids. when you stop smoking, you have no feel good cannabinoids of your own. until your body kick starts production, you feel lousy, so many people smoke again to feel better. and today's marijuana could be more addictive. it has more of the psychoactive ingredient thc than ever before. brain researcher dr. nora volkow. >> if you smoke a ve...