Trace Mineral- Iodine

Question 1

Sources

Answer 1

-milk/ milk products
-Seafoods (help), salmon and sardines
-Fruit and veg (carrots)- depends on iodine levels in soil

Question 2

Functions

Answer 2

-Required by thyroi gland for FORMATION OF THYROID HRMOES- regulation of the rate of oxidation of nutrients in body cells
-THYROID HORMONES ARE NEEDED TO HELP MAINTAIN METABOLIC PROCESSES- contribute to body weight and cellular metabolism
-During the three months of GESTATION, iodine is REQUIRED FOR THE DEVELOPMENT OF NERVOUS SYSTEM in foetus

Question 3

Deficiency in Iodine

Answer 3

-MODIFICATION in the PRODUCTION OF THYROID HORMONES- can cause a CHANGE IN METABOLIC RATE
-LETHARGY AND SWELLING OF THYROID GLAND in neck- form GOITRE
-Infants born to mothers deficient in Iodine- likely to suffer CRETINISM- syndrome of DWARFISM AND MENTAL RETARDATION

Question 4

Iodine excess

Answer 4

-Very rare
-Mouth pain, nausea and vomitting

Question 5

Factors affecting absorption/ Bioavailability

Answer 5

-Cabbage and veg (turnip)- contain GOITROEGNS- REDUCED ABSORPTION OF IODINE- excess consumption over a long time period- GOITRE

Question 6

Effects of cooking/ storage

Answer 6

-STABLE TO STORAGE AND MANY PROCESSING TYPES

cooking Iodine- rich foods- WILL EXTRACT A SIGNIFICANT PORTION INTO COOKING WATER