1. Selenium is a vitamin.
True
False

2. The mineral selenium is needed for normal functioning of the immune system and thyroid gland.
True
False

3. Selenium is never found in plant foods.
True
False

4. The amount of selenium in soil (which varies by region) determines the amount of selenium in the plant foods that are grown in that soil.
True
False

5. The high plains of northern Nebraska and the Dakotas have very high levels of selenium.
True
False

6. Selenium also can be found in some meats and seafood.
True
False

7. Brazil nuts and walnuts are poor sources of selenium.
True
False

8. Selenium deficiency is linked to Keshan Disease.
True
False

9. Keshan disease has been observed in low-selenium areas of China.
True
False

10. Severe gastrointestinal disorders (such as Crohn's disease) may decrease the absorption of selenium, resulting in selenium depletion or deficiency.
True
False

11. There is a moderate to low health risk of too much selenium.
True
False

12. High blood levels of selenium can result in a condition called selenosis.
True
False

13. Symptoms of selenosis include gastrointestinal upsets, hair loss, white blotchy nails, and mild nerve damage.
True
False

14. Consumers do not need to use caution before routinely taking more than the 200 mcg of selenium.
True
False

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