llonghair-
I am having the same experience, but have not figured out the solution yet. I am a 35 year old woman who has had lifelong allergies and post-nasal drip, respiratory issues, though not asthma. After having pneumonia this fall, I stopped eating wheat. The lung problems cleared up immediately, along with all of my hypothyroid symptoms, most notably constipation, digestive issues, energy level and excess weight. I had been on Synthroid for 4 years. I lost about 8 pounds, felt great for several weeks, and have been ramping down the Synthroid to none. However, I am now quite hyperthyroid. I am hoping that this is a temporary issue that will resolve when the excess Synthroid clears my bloodstream (it takes 4-6 weeks to clear out). But please keep me updated on what you find and I will do the same as it sounds like a similar issue....