Iodine

It doesn't get as much press as calcium, magnesium, or even zinc, but iodine is a crucial mineral for thyroid health, and it's especially important for pregnant women and healthy babies.

Even if you eat a balanced, whole-foods diet, you may still be missing vital nutrients.

Trace minerals such as zinc and iron are absolutely vital for your immune function, among other things. Here’s our guide to the most important ones and how to make sure you’re getting enough of them.