Cocaine and Milk Shakes same addiction?

according to recent studies the same way cocaine and heroine can control your mind into making you become addicted is the same way fatty foods can do. meaning if you are craving a piece of cake today then you will keep craving that peice of cake becuase your brain now recognizes the chemicals in the cake as an additive. "Cocaine and other addictive drugs have their effect because they increase the level of the brain chemical dopamine, a neurotransmitter that stimulates neurons in a region of the brain called the substantia nigra, which controls movement as well as the sensation of pleasure." therefore just like drug addicts become tolorant to the drugs they used to get high, people who consistently eat fatty food build up a tolerance as well. so over time an obese person would have to eat more and more of the substance to actually enjoy the taste of that food.