Minerals
Iodine
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Iodine
Physiology
Iodine (I) has atomic number 53 and atomic weight 126.90
Non-metal in the halogen group
Essential for
Thyroid Hormone
synthesis
Dosing
Recommended Daily Allowance (RDA)
Men and women: 150 mcg daily
Pregnancy: 220 mcg daily
Lactation
: 290 mcg daily
Precautions
Iodine intake >500 mcg daily offers no benefit
Iodine intake >1100 mcg daily may result in toxicity (inhibits
Thyroid Hormone
synthesis)
Sources
Multivitamin
s
Many
Prenatal Vitamin
s contain 150 mcg Iodine
Sources
Dietary
Iodized Salt
(400 mcg per 1 tsp)
Not all salt is iodized (check labeling)
Dairy
Cows Milk (60 mcg per 8 oz)
Soy Milk
Cheese
Yogurt
Ice Cream
Seafood
Pregnant women should avoid excessive fish (see
Mercury Content in Fish
)
Saltwater Fish (e.g. Cod contains 100 mcg per 3 oz)
Shellfish
Miscellaneous
Eggs
Seaweed (e.g. kelp)
Soy sauce
Resources
Thyroid
.org
http://www.thyroid.org/iodine-deficiency/
Wikipedia
http://en.wikipedia.org/wiki/Iodine
References
(2015) Presc Lett 22(5): 25-6
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