I was diagnosed with celiac (with biopsy) and went on the gluten-free diet in 2008 (when I was 37 years old). I just had some blood work done, and it shows I have low vitamin B12 and vitamin D levels, both of which my GP told me were likely related to my celiac disease. And, I have indeed read that low levels of these vitamins can be caused by celiac disease.
I guess my question is whether that is true of people who have UNTREATED celiac disease, rather than people who have celiac but have been following a strictly gluten-free diet for years. I thought that years of being on a gluten-free diet would've allowed my insides to "heal", and thus I thought these kinds of issues wouldn't necessarily crop up. If that's true, then my concern obviously is that maybe things haven't healed, and these vitamin deficiencies are due to this lack of healing, even after so many years of the diet.
Can anyone shed some light on whether celiac-related vitamin deficiencies like this are typical, even for celiacs who have been on the gluten-free diet for years and who have, assumedly, fully healed? Or am I just completely misinformed as to the way intestinal healing works for celiacs, even those who've been gluten-free for a while?