@CNN: RT @elizamackintosh: Do you know what’s in your table salt? In most developed countries, salt has been fortified for nearly a century. Which is why iodine deficiency — the world’s leading cause of preventable mental impairment — is almost unheard of in places like the US. https://t.co/omH5oyTtQw https://t.co/kbQKazAgnu

Do you know what’s in your table salt? In most developed countries, salt has been fortified for nearly a century. Which is why iodine deficiency — the world’s leading cause of preventable mental impairment — is almost unheard of in places like the US. https://t.co/omH5oyTtQw pic.twitter.com/kbQKazAgnu

— Eliza Mackintosh (@elizamackintosh) February 14, 2019