All interesting comments. Some people have sensitivities and allergies to many different kinds of food and additives. Doesn't necessarily make them poison for everyone. For example, Mr. Stitchnripper has food sensitivities, not allergies, and it took a long time with doctor's help to figure out why he got so many migraines. He cannot have cow dairy, soy, or whole grains (the healthy kind). Luckily we know how to eat well and try for natural as much as possible. But, I do drink some Diet Coke and have for years and years with no obvious issues.