I'm listening to a podcast from Nora Gedgaudes (author of Primal Body Primal Mind) and in this episode she and a guest are discussing gluten sensitivity in detail.
Something really interesting they brought up was to pay attention to the foods you think you can't live without (grains, breads, dairy, etc). The reason, it's very possible that you have a sensitivity to those items.
After they discussed it a bit, I could see the reasoning. If our body is sensitive to a substance, endorphins are released to combat the substance and we can get hooked/addicted to that biochemical reaction.
It's definitely a different perspective from what I've heard before and something I'm going to pay more attention to.
What do you think?