1) your great grandparents loved the ocean air and thus moved near the coast 2) plants near the coast have iodine because iodine has been blowing in from the o

1) your great grandparents loved the ocean air and thus moved near the coast 2) plants near the coast have iodine because iodine has been blowing in from the ocean and depositing on the soil for eons 3) you eat those plant 4) you don’t have an iodine deficiency because your ancestors moved to live by the sea