<<Disclaimer: Verify this information before applying it to your situation.>> Since so many listers emailed to say they're having similar problems and are interested in the summary, I'm including most of the information I was sent. In my initial post, I unfortunately neglected to mention that I was biopsy-diagnosed almost 9 years ago and have been GF since. Many of the responses were from those recently diagnosed and that factor must be taken into account. When/if further information comes in I'll post it. I started to lose my hair in gobs and also had other symptoms (always cold, low temperature, fatigue, dry hair, nails,and skin, chronic indigestion from a myriad of foods); it turned out to be low thyroid, which is common with celiacs. Itake natural pig thyroid and am not losing any more hair. It's too soon to tell if I'm growing any new hair. I had a bloodtest for TSH, the thyroid test, but it came back negative. The doctor that gave me the pig thyroid said that the bloodtest has a high rate of false negative responses, meaning it comes back saying your thyroid is okay when it's not. Plus,the Synthroid that the regular MDs give for thyroid does not contain the natural thyroid that has the calcitonin in it that keeps the calcium in your bones and therefore would take the calcium out of your bones, something we celiacsjust don't really need! So, try to locate an integrative medicine doctor who knows about natural pig thyroid. Hope this helped! I believe that my hair loss is affected my mercury toxicity -- for which I have been tested extensively. I have begun the long/tedious process of removing all of my metal fillings/crowns (of which I have many), and am accompanying that with IV chelation therapy/IV vitamin C after every dental appointment. I believe that, more than anything, has helped my body deal with the toxic overload of the heavy metal. In my reading, I have learned that many people with autoimmune disorders such as CD also have toxic loads of heavy metals. It may be a path you want to explore. One possible cause is autoimmune hypothyroid disease (hypothyroidism), which means that the thyroid is under-active. I was diagnosed with CD in April1998; then in late November 1999, I was diagnosed as hypothyroid. I hadnoticed some thinning of my hair, but I hadn't put it together withanything. I'm now on thyroid hormone, Synthroid, every day, and not onlyhas my hair loss stopped -- it has reversed, and I am getting new hairgrowth. I've learned that thyroid problems are fairly common in people withCD and also fairly common in women over age 50. I'll be 50 this spring andam definitely perimenopausal. So you might want to talk with your primarycare physician about ordering some thyroid level tests; they are simpleblood tests and, if my memory serves me correctly, there are 3 of them: forT3, T4, and TSH, the last one being for the level of one's Thyroid Stimulating Hormone. Beyond that, it gets technical, and while my doctorexplained it all to me, I couldn't repeat it. I do know, though, that I amfeeling better; in addition to new and healthier hair growing, my energylevel is better. I hope this helps. Hair loss can be an autoimmune disorder called Alopecia Areata. I also believe that Celiacs are more likely to acquire other autoimmune disorders more often than a non-Celiac would. Do you have a good gynecologist who might check your estrogen, progesterone, and testosterone levels. Sounds like something is out of balance. My hair loss seemed more gradual than you describe yours but I got concerned at perimenopausal stage. (Father and son both with male pattern baldness.) Began using Rogaine (but used a generic once it became available because of cost). Also because of other things, really increased my vitamin intake (including B12, B6, folic acid), and more aggressively treated problems caused by CD (using digestive enzymes, treating for candida, etc.) Also started taking estrogen and progesterone. Four years passed with no additional hair loss; possible improvement. In August, scalp became irritated (perhaps by switching back to Rogaine brand--wonder if it has wheat-based alcohol)and I decreased and then stopped using any form of Rogaine in an attempt to heal scalp. I don't think my hair is any thinner now than it was in August. Best hypothesis is that Rogaine did help but my now better nutritional status is helping too. And maybe the hormones. there are a number of things to consider when evaluating hair loss. 1. vitamin deficiencies 2. protein and/or protein-calorie malnutrition - Both 1& 2 could be related to undiagnosed or untreated CD 3. Alopcia Areata - another autoimmune disorder associated with CD.