Exam 3 iodine and fluoride

Question 1

Describe the role of iodide in the body

Answer 1

Thyroid hormone

Question 2

What are the effects of iodine deficiency during pregnancy on the outcome in the infant

Answer 2

Can cause mental impairment from moderate to severe

Question 3

What is the effect of iodine deficiency on the thyroid gland

Answer 3

If iodine is deficient, thyroid hormones cannot be synthesized. Enlarged thyroid gland

Question 4

How were low levels of iodide intake resolved in US

Answer 4

Iodized salt

Question 5

List three mechanisms by which fluoride reduces tooth decay

Answer 5

Fluoride in saliva prevents cavities in children and adults, Fluoride in toothpaste and mouth wash has the same effect but only stays in our mouth for a couple of hours

Question 6

What might be the outcome of a long term intake of fluoride in water at 8 ppm (very high?) What is the most common cause of this in United States?

Answer 6

Can cause fluorosis, black and brown stains and cracking and pitting of the teeth. Most common cause is ingestion of fluoride containing toothpaste