The biggest three substances that have the most potential to cause long term damage to our health are salt, sugar and fat. (Most flour could also be lumped in with sugar since it causes an immediate rise in blood sugar and has no nutritional value).
It might surprise you to learn that the big food companies employ scientists who work around the clock to discover the precise amount of these ingredients required to elicit an addictive response. I did quite a bit of research on the subject while writing my book. Pick up a copy below and learn the simple secrets to overcome the problems associated with processed foods for good!