2 years ago I looked in the mirror and noticed all my teeth were discolored!! It FREAKED me out! The enamel had vanished, but only halfway....just from the gum to the middle of my tooth. This is on the top and bottom teeth, and then I noticed when I run my tongue along the edge of my 2 top or bottom teeth, I feel where the tooth has actually worn/deteriorated. During this time I was eating gluten but was so sure I was celiac....I was having terrible gastro problems at this time also....I was not digesting any feed it seemed...sorry to be gross, but the food pretty much came out as whole as it went in. I was guessing the damage to my teeth was from this prolonged period of gastro issues and not absorbing nutrients. I still have not been diagnosed, no insurance, but 6 years now I've had symptoms. I'm 40 btw and never had trouble with my teeth until my celiac symptoms started 4 years prior.