Cannabis consumption enhances the brain's processing of sweet tastes and engages reward circuitry, contributing to the 'munchies'.

“what they found is under the influence of a canabo if you stimulated sweet taste buds you got an enhanced response in the gustatory cortex but not if you did salty bitter or sour or I don't know if they did do mommy in that one but it was very explicit to sweet tasting and so you have this kind of ability to like jack up the way the brain is processing sweet tasting Foods you have this engagement of the reward circuitry”