Early guidelines from years ago concerning D3 supplementation was unduly conservative. There was fear of toxicity in over-supplementing because D3 is a fat soluble vitamin and not a water soluble vitamin. More recent studies have shown we can supplement safely at considerably higher levels for extended periods. But yes, 50,000 IU would not be safe over an extended period of time. That much is a kick start dose.

@knitty kitty I had an injury from assuming I could do work outs at the gym like I did in my 20s 😏. it didn’t work in my favor. My orthopedic doctor told me to go on 50,000IU /per week for 4-6 weeks for a boost and then do a maintenance. I took 2 and got nervous to take any more, it seemed so high to me. About 7  months later I had a blood test revealing that my Vit D levels are lower than normal. I started taking vit D supplements-4000IU./a day now. (the natural garden of life ones) I had a friend whose levels were low and she was having a mental breakdown.  My B12 levels were right in the middle of the range.     

@Ginger38, Have you been checked for nutritional deficiencies, besides iron?   Celiac disease causes inflammation which results in nutritional deficiencies.   Iron needs Thiamine and the other B vitamins to make new red blood cells.   Iodine and thiamine deficiencies affect the thyroid.  The thyroid is one organ that uses lots of thiamine.   Vitamin D deficiency leads to hormonal problems, including menstrual problems.  Vitamin D needs Thiamine to activate it.   Heart palpitations and chest pain after gluten exposure can be evidence of poor digestion and a drop in available thiamine.  Consumption of any  foods high in carbohydrates can cause a drop in thiamine.  This is called high calorie malnutrition. Anxiety, numbness, tingling, acne, and brain fog are symptoms of Thiamine and the other B vitamin deficiencies.  There's eight B vitamins that all work together in concert.  They are water soluble.  They can be hard to absorb by inflamed intestines.  Vitamin A can improve acne. I suffered from all the same symptoms which only resolved with B Complex and Thiamine (in the forms TTFD and Benfotiamine) supplements, Vitamins D, A and C.  Magnesium, Thiamine and B6 Pyridoxine will get rid of the nightmares. Replenishing your vitamin and mineral stores will help heal and feel better faster.  Talk to your nutritionist and doctor about supplementing. Think about adopting the Autoimmune Protocol diet to help with SIBO and MCAS to reduce bloating and heal the intestines. @Alibu and I were just discussing diagnosis without obvious villus damage here.   This study followed people who showed no or little villi damage at first....they accrued more damage over time. Outcomes of Seropositive Patients with Marsh 1 Histology in Clinical Practice https://pmc.ncbi.nlm.nih.gov/articles/PMC4980207/ There's a move to be less reliant on endoscopy for diagnosis. Biopsy‐Sparing Diagnosis of Coeliac Disease Based on Endomysial Antibody Testing and Clinical Risk Assessment https://pmc.ncbi.nlm.nih.gov/articles/PMC12074562/

Okay, Thank you!! I already have thyroid problems and my total iron binding capacity is high which usually means low iron but everything else was normal, lower end but “normal” my hair falls out and my nails won’t grow without breaking but nothing is being treated iron wise.  I have started having palpitations and chest pain,  both of which seem to be attributed to exposure to gluten. I’ve also been having a lot of nightmares, anxiety, numbness and tingling, brain fog, spotting between cycles and acne. Idk if all those are relatable to gluten / celiac but I’m concerned  I’ve finally tipped my body/ immune system into a bad place. Is there anyway to detox and heal faster or treat these symptoms if related to gluten ? 

@Alibu, Start with this study... High-dose thiamine supplementation improves glucose tolerance in hyperglycemic individuals: a randomized, double-blind cross-over trial https://pubmed.ncbi.nlm.nih.gov/23715873/ "Conclusion/interpretation: Supplementation with high-dose thiamine may prevent deterioration in fasting glucose and insulin, and improve glucose tolerance in patients with hyperglycemia. High-dose thiamine supplementation may prevent or slow the progression of hyperglycemia toward diabetes mellitus in individuals with impaired glucose regulation." They used 100 mg of thiamine three times a day.  They don't say which kind of thiamine was used.  Benfotiamine is my recommendation because it has been shown to promote intestinal health and helps with leaky gut and SIBO.  Thiamine forms including Benfotiamine and TTFD are safe and nontoxic even in higher doses.   The old "gold standard" diagnosis is changing.  It must be confusing for doctors as well.  I went through all this myself, so I understand the frustration of the vagueness, but set your course and watch as your health improves. Keep us posted on your progress!   P.S. here's another link.... https://pubmed.ncbi.nlm.nih.gov/39642136/