This is real, one of the odder findings in the field. GLP-1 receptors sit in the brain as well as the gut, including the mesolimbic reward circuit, where the VTA and nucleus accumbens handle wanting and reward-seeking in general, not only food. Stimulating them seems to turn down that whole system, not just hunger. Alcohol has the best evidence: numerous observational studies plus more and more trials find lower intake and less craving, and researchers now study it as an alcohol use disorder treatment on its own. Nicotine looks similar. For gambling, compulsive shopping or impulsive risk-taking evidence is weaker and self-reported, yet the mechanism is shared, so it's plausible. Two caveats: mostly observational, and hard to separate the drug from what big weight loss does.