Researchers at the University of Michigan have discovered cheese contains a chemical found in addictive drugs. It's called casein and it does the same things to our brain as opioids. It even breaks down in our stomach to form another addictive substance called casomorphin. Which is another opioid.
Casein is also the reason some people are allergic to dairy products. In cheese the casein is concentrated so we actually get a heavier dose. Right up these with cheese is chocolate and chips.
Of course this is not your fault and cheese, chips and chocolate won't hurt you like opioids will. So I say just keep enjoying your cheese! I've been trying to cut back a little on cheese, chips and chocolate because I want to maintain a healthy weight. Now I know why it's so hard.