Testing ruled out their first suspicion. But further tests pinpointed what they — and the boy — had been missing: iodine. A century ago, iodine deficiency affected kids across large swaths of ...

Iodine is an essential trace mineral. Animal-based foods like milk, fish, and eggs most famously make up iodine intake, though plant foods also contain iodine. Here’s everything you need to know about ...

Zach is a freelance writer, restaurant owner, and lifestyle expert. Since 2009, he has covered everything from pop ...