iodine Flashcards
(17 cards)
What are the two types of iodine?
Iodine and iodate
Where is 70-80% of iodine found in the body?
Thyroid gland
What are goitrogens and how do they affect iodine?
Substances that interfere with absorption and metabolism, inhibiting thyroid hormone production by competing with iodine
List some examples of goitrogens.
- Cabbage
- Cauliflower
- Kale
- Soy
- Tobacco
How can goitrogens be deactivated?
By cooking
What role do iron and selenium play in thyroid function?
Iron is a cofactor for Thyroid peroxidase, and selenium is needed for the conversion of T4 to T3
What is the precursor to thyroid hormones?
Tyrosine
What is the Recommended Daily Intake (RDI) of iodine to prevent thyroid disease?
150 µg daily
Why is iodine important for fetal development?
It is needed for proper development
What factors increase the need for iodine?
- Growth and development
- Pregnancy
- Diarrhea
- Cystic breast
- Vegans with inadequate diet
- Seafood allergies
- Goitre/thyroid deficiency
What is hypothyroidism?
Inadequate thyroid hormone production
List some symptoms of hypothyroidism.
- Lethargy
- Weight gain
- Hair loss
- Memory issues
- Constipation
- Cold intolerance
What is Hashimoto’s disease?
Autoimmune hypothyroidism
What is hyperthyroidism associated with?
Graves disease (autoimmune) or goitre
List some signs of hyperthyroidism.
- Brassy taste in mouth
- Burning sensation in mouth or throat
- Gut irritation
- Goitre
- Hypersensitivity
What is tested for iodine levels?
Free Tyroxine T4
What are some sources of iodine?
- Seafood
- Eggs
- Milk
- Seaweed
- Some meats
