I would like to know if anyone here has looked into what the connection is between Alzheimer's and thyroid, and come to any conclusion. I have noted various posts on this issue, e.g. at hypothyroidmom.com, but not answers. Initially, my thought was that lowered metabolism due to hypothyroid might be a causative factor, but I'm not satisfied with that as a sole cause.
I did find references to a study that concluded older women who have 1.0<TSH<2.1, are considerably less likely to end up with Alzheimer's. (UGH. Too bad the study used only TSH!) That TSH range corresponds to what Functional Medicine practitioners like. After thinking a while, it occurred to me that TSH in this range could be implying that this population has neither Graves autoimmunity, nor Hashimoto's autoimmunity. There are many autoimmune disorders, and I did discover there is even something called brain autoimmunity, which can be triggered by consuming gluten and/or dairy. And, it is known that diabetes is often autoimmune, and Alzheimer's has been called diabetes Type 3. So ... what do you folks think? Have you found evidence that thyroid is not a direct factor, and what should be thoroughly examined, is the number of autoimmune disorders which a patient is carrying around?