Paul Stanford has advocated for medical marijuana and hemp since 1990 as the president of various organizations. The document discusses how medical marijuana can increase appetite by interacting with the body's CB1 receptors. These receptors are located in parts of the brain that regulate food intake, such as the hypothalamus, as well as in the stomach, intestines, and limbic forebrain which makes food more desirable. Additionally, CB1 receptors in the brain's reward center can make eating and other activities more pleasurable when cannabis introduces cannabinoids to the body.