According to a study at the university of Michigan a substance found in cheese, called casein, triggers the brain’s opioid receptors. It produces a feeling of euphoria.

Casein is found in all dairy products, but in cheese, which requires a lot of milk to produce it, you get a much heavier dose.

Kurt Cobain, a famous heroin addict, may have been looking for the same effect in his favorite food: macaroni and cheese…