CPE Quiz: Vitamin D & Chronic Disease Risk

Question 1

The best way to determine vitamin D status is to measure serum levels of which of the following?

A. Vitamin D3
B. Vitamin D2
C. 25-hydroxyvitamin D (25(OH)D)
D. 1,25-dihydroxyvitamin D (1,25(OH)2D)
E. 24,25-dihydroxyvitamin D (24,25(OH)2D)

Question 2

Farm-raised salmon is one of the best food sources of vitamin D.

A. True
B. False

Question 3

Which of the following groups is at risk for vitamin D deficiency?

A. African-Americans
B. People living in the northern US during winter months
C. People who are hospitalized long-term
D. Religious groups that cover the skin
E. All of the above

Question 4

For which reason are obese people more likely to be deficient in vitamin D?

A. They’re less likely to go in the sun than normal-weight people.
B. They consume fewer vitamin D-containing foods than normal-weight people.
C. Vitamin D is less available in the body because it becomes trapped in fat cells.
D. a and b
E. All of the above

Question 5

The vitamin D in fortified orange juice is as bioavailable as the vitamin D in milk.

A. True
B. False

Question 6

Which one of the following chronic diseases has been associated with vitamin D deficiency?

A. Multiple sclerosis
B. Type 2 diabetes
C. Colon cancer
D. Type 1 diabetes
E. All of the above

Question 7

Which of the following conditions has not been associated with vitamin D deficiency?

A. Osteopenia
B. Osteoporosis
C. Osteoarthritis
D. Osteomalacia
E. All these conditions have been associated with vitamin D deficiency.

Question 8

People who live north of Atlanta, Georgia, may need to do which of the following during the winter?

A. Get twice as much sun exposure to produce vitamin D in the skin.
B. Eat spinach for vitamin D.
C. Take a vitamin D supplement because the skin does not produce vitamin D during the winter.
D. Get half as much sun exposure.
E. None of the above.

Question 9

Breast milk supplies an infant with enough vitamin D.

A. True
B. False

Question 10

Vitamin D2 and vitamin D3 in foods or supplements are equally effective in raising serum levels of 25-hydroxyvitamin D.

A. True
B. False

Question 11

Which of the following is the optimal level of serum 25-hydroxyvitamin D?

A. < 20 ng/mL
B. 20 to 30 ng/mL
C. 30 to 60 ng/mL
D. 60 to 100 ng/mL
E. > 150 ng/Ml

Question 12

According to Dr. Holick, how much vitamin D should children and adults with inadequate sun exposure consume each day for good health?

A. 400 IU
B. 800 IU
C. 1,000 IU
D. 5,000 IU
E. 10,000 IU