Hashimoto's for 15 years I had a bad time with tummy cramps not to mention chronic on going constipation. Sometimes to avoid laxatives I resort to colon cleansing it's that bad. I was gluten free for a while to see if it helped. Tummy cramps went away but that's all. Then I was tested for celiac disease...negative. So out of curiosity why is it better to avoid gluten with hashimoto's ? Thanks.