I.H.
I'm not sure if this will be THE answer but I've read a lot into "natural and organic" living and it seems that A LOT of chemicals used in both food and cosmetics, such as lotions, toothpastes, even in water, have hormone disruptions in them, which can also lead to an unhealthy thyroid function. I'd strongly suggest that you get rid of all non-natural lotions, shampoos, etc and switch to organics or all natural. Food wise, especially organic dairy is important and non-hormone meats. Ideally organic fruits and vegetables too but at least wash these thoroughly. Good luck!