raw salt of any kind from any source does not contain iodine. this includes sea salt rock salt and any other natural form of salt. salt distributors began adding iodine to sodium chloride (table salt) around the 1920s when scientists discovered iodine is essential to thyroid health. when the thyroid gland doesn't get enough iodine it grows very large. this is called 'goiter. ' one hundred years ago it was not uncommon to see people walking around with huge goiters due to lack of iodine in their diet. iodine is not found in many vegetables or other foods (seaweed is the notable exception). companies began adding iodine to salt in the 1920s because almost everyone uses salt in cooking. adding iodine to salt offered a way to make sure people got enough iodine to satisfy the requirements of their thyroid gland. salt with added iodine is called "iodized" salt. it's important for most people to eat iodized salt at least occasionally in order to maintain thyroid health. if you don't have thyroid problems you don't need to eat iodized salt all the time. you can use fancy salt like himalayan rock salt. but try to get iodine occasionally since it's an essential nutrient. wishing you well!
does himalayan salt contain iodine?