Yup. I discovered that there is also an unseen feedback loop in our food system that provides evolutionary pressure to the recipies in all processed and restaurant food towards addiction. All processed and fast food restaurant food CANNOT be eaten without drinking soda any longer. All processed and fast food tastes terrible without drinking a soda with them and drinking all sodas on their own is so overwhelmingly awful that you kind of have to either have a bite of fast food or processed food. And the more that you drink soda the more food you end up eating. The more fast food and processed food you eat the more soda you end up drinking. I think there is an unseen feedback loop in the food processing system that no one has really noticed that has accidentally created a kind of superfood that has maximized salt, sugar, starches and various "flavourings" that maximize a kind of addiction / buzz that is really difficult to notice because it is just below the threshold of what you would call a drug high. I learned to cook about two years ago and part of cooking is the unseen process of always shopping for ingredients. Cooking is not the process of cooking once a day or whatever. Cooking turns out to be an all day job every day, you are always sourcing and stocking ingredients in the fridge so that cooking natural food is actually possible. As a result, I accidentally weaned my self off of sodas and restaurant food and my experience is that eating any fast food, processed food and a soda results in a kind of weird buzz. You are full and feel good for about 20 minutes and then the high comes down and you don't feel satisfied any longer. What I am getting at is that these foods are EXPLICITLY DESIGNED for addiction not by humans but by this unseen evolutionary process via the consemer <--> producer feedback loop. So yeah, you are right. Thin people don't drink diet soda because thin people are not addicted to this hidden feedback loop. // EDIT: By "I discovered" what I really mean is that this forum has forced me to start to think about evolutionary pressures in all processes to explain why things are the way they are + I accidentally discovered the processed food / fast food / soda buzz after learning to cook. I didn't really discover anything, people have been pointing this out for years.