Be sure you have either a supplement for iodine, or are getting enough seafood. Iodine deficiencies cause goiter. And it used to be major medical issue in the United States, until they figured out that they needed to iodine the salt. Folks who don’t use salt frequently develop thyroid issues due to the lack of iodine. When I was a young child of 4 or 5-years, my folks were completely self sufficient, on the small farm outside of Boise. And, Mom didn’t use any salt on anything. Grew a garden of just over an acre, and had about ten acres in fruit trees, and berries. Raised and butchered three steers, and a gross of chickens every year, supplemented that with a couple of deer. The folks and the three older kids all developed thyroid issues, which lasted the rest of their lives. My younger brother and I weren’t effected because Mom was giving both of us a vitamin and mineral supplement which included the iodine we needed.