12 Aug 2019 --- A study has revealed that mice will voluntarily choose to consume behavioral-effective doses of edible tetrahydrocannabinol (THC) – the primary psychoactive component in cannabis – and do so repeatedly. Lead researchers of the experiment propose that these findings will help open new doors to further studies of the behavioral and physiological effects that occur in people who consume marijuana-infused food. The study is among the first to report on voluntary oral THC consumption in animals, a method of consumption that is similar to the way humans take the drug.