I have hypothyroid, I don't yet know if it's Hashi's, but even though my levels are normal I still have some symptoms once and awhile. I noticed a lot of people with thyroid issues having a lot of success with cutting out gluten, so I decided to give it a shot. Yesterday was my first day being GF and I feel pretty darn good so far. (I know it's too early to notice any real benefits, but I'm not crying over bread just yet!) I think the theory is that Hashi's and Celiac are both auto immune disorders and somewhat related.

I am GF due to Hashi's (I was diagnosed in Nov. 2012). My Dr. mentioned that GF may help me feel better but did not go in to detail. He referred me to a nutritionist which I will see this month. I don't know why GF helps but I can tell you that it does. I normally eat low carb due to other medical issues so cutting out gluten for my main meals is fairly simple since it's usually in carb heavy stuff. What I have difficulty with is snacks and treats. I have a handful of sugar free and low carb things that I LOVE and they keep me on track and most of them contain gluten. :frown: I love sugar free chocolates and low carb tortillas were a staple in my house but both have gluten. I have also discovered many seasonings and marinades that I used have gluten in them also.
Anyway, when I am GF and following a low carb (carbs from fruits, veggies, and legumes only) I feel tremendously better. I am not as tired, my joints don't hurt as much, I seem to think more clearly, etc. I just feel better, much better. It's very hard to stick with some days but it is very worth it. I have read conflicting info on how long it takes to get gluten out of your system... anywhere from a week to a year but when I am diligent and cut out the gluten, I feel better within 2-3 days. The first noticeable improvement is my energy levels. I don't feel like a zombie.
I am not always as committed as I could be. I have a bad sweet tooth and I cave in to gourmet cupcakes once in awhile and I can feel the difference almost immediately. I hope this helps. It's hard to hang in there but it's worth it.

I would agree with mindyhenry74. I have Hashimoto's and was grain and GF for 6 months. I notice a change in 2-3 days as well and I finally had energy. I have been off the wagon for the past 2 weeks but have restarted today. Giving up coffee, sugar (honey and fruit included) and all dairy except for SCD yogurt. I just long to feel good again and feel motivated to start projects and finish them. For me it's psychological as well. I feel down on wheat and sugar.
So here we go again. Good luck with GF!