probably anything traumatic and unresolved would lead to thyroid problems. It keeps coming back to the same principle...stress leads to cortisol, which leads to excess of all the inflammatory markers, which leads to feeling bad. Food plays a factor, like if you ate something rough and irritating, all the chemicals and fillers, but im thinking things like what you linked to are significantly more important. At the very least...just say we eliminated all kinds of abuse, lies, manipulation, fear mongering...stuff like that, then it would become obvious what the problems with food were and quickly resolved, because there would be well intended action towards having nothing but good stuff available. I guess in the mean time we have to be selective...I'm not surprised by that study one bit, and Peat mentions many times about how studies prove that a sense of fear, or lack of hope, or the presence of authoritarian people, all make a profound difference on whether or not the animal survives or thrives, or doesn't. Abuse? Of course it would make everything worse, mentally and psychosomatically. I don't even understand what would bring people to do such things...its like, what's the point? If the world is so harsh to where you would have to commit heinous acts just to get by...then do you really want to be here anyways?