What causes iodine deficiency?

A lot of people think they may be deficient in iodine because they’re not eating enough seafood or because of poor growing soil. While this may be true, there are several other reasons for iodine deficiency.

Here are the 7 surprising potential causes of an iodine deficiency:

1. Selenium deficiency

2. Radiation

3. Goitrogen foods

4. Bromine/fluoride

5. Perchlorate

6. Oral contraceptives

7. Smoking