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The Gastroenterology Training Handbook
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home -
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Minerals -
Iodine
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Written by Dr Sebastian Zeki
MCQs for this page
Iodine
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Iodine
Proximal
small
bowel
absorption
Excess
secreted by
kidneys
T3
T4 (thyroxine)
Dietary sources
Table salt (fortified with iodine).
Bread.
Dairy products.
Seafood.
Drinking water.
Vegetables.
Effects of
deficiency:
Goitre.
Hypothyroidism.
Cretinism (due to
hypothyroid mother).
Increased neonatal and
infant mortality.
Toxicity
If the patient has
iodine
deficiency, sudden excess can
cause hyperthyroidism
If the patient has Hashimoto’s
thyroiditis, it can exacerbate
hypothyroidism.
(
RDA:150 mcg/d adults)
Sources:
Topical meds
Radiographic contrasts
Dietary supplements
(kelp, seaweed).
Written by Dr Sebastian Zeki
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