Analogy is the best medicine

Ben doesn't appreciate his doctor's alarmist advice.

It would be quite possible to push this image further: "I can't afford healthy food!"; "Are you telling me to starve to death?"; "The cheap calories I get from high fructose corn syrup means I have more money to help others"; "Think of how many jobs would be lost if the fast food industry were to shut down"; and so on.