Trace Mineral- Selenium

Question 1

Sources of Selenium

Answer 1

-Liver
-Butter
-Crab
-Barley
-Oats
-brown rice

Question 2

Functions

Answer 2

-ANTIOXIDANT- protects against cancer, esp. breast and colon
-works with VITAMIN E- ENHANCE IMMUNITY
-Helps improve SKIN CONDITIONS- benefits Cardiovascular System by DECREASING THE RISK OF STROKES AND HEART ATTACKS
-key role in THYROID HORMONE METABOLISM AND SUPPORTS NORMAL THYROID FUNCTION

Question 3

Deficiency

Answer 3

-Rare- Selenium found in a wide variety of foods eaten on a regular basis

Question 4

Excess

Answer 4

-Thought ot interfere with SULPHUR compounds, and even replace Sulphur in body- very similar biochemically- may decrease a number of ENZYME ACTIONS
-Long term ingestion- CAUSE PROBLEMS WITH TOOTH ENAMEL AND STRENGTH
-High levels increase tooth decay

Question 5

Bioavailability

Answer 5

-Stable during storage
-Animal foods- lose a little during processing- canning seafood- 10% loss
-Processing wholegrains- large loss- 60% loss