CBD oil is increasingly becoming some kind of modern-day “miracle” cure. Many claim that it helps settle stress, anxiety, depression and chronic pain, while there have been a number of cases of epileptic children who have benefited from it. 3 The one thing you probably haven’t thought of cannabis oil treating, however, is weight gain. Cannabis in its regular form contains THC – the chemical that gets you high. And it’s often associated with getting the “munchies”.