Iodine 

Recommended Dietary Intakes
Adults - 150 mcg;
Pregnant women - 120 mcg

This Mineral Is Essential For...

As part of several thyroid hormones, iodine controls nutrient metabolism; nerve and muscle function; skin, hair, tooth, and nail condition.

Sources...

Iodised salt, kelp, seafood, salt water fish and vegetables grown in iodine-rich soils are excellent sources of this mineral. Also found in garlic, mushrooms, sesame seeds, sea salt, soybeans, spinach.

Comments...

You usually will not have a deficiency in this mineral and supplements are unnecessary.

Deficiency Can Cause...

This is very uncommon, however, some symptoms include -

Excessive iodine can cause a metallic taste in the mouth, sores in the mouth, swollen salivary glands, nervousness, headache, rashes and can lead to thyroid hyperactivity, diarrhoea, and vomiting