Iodine

Iodine's sources and requirements

1. IODINE
SOURCES &
REQURIEMENTS

2. INTRODUCTION:
•Iodine is one of the essential Iodine is one of the essential
micronutrients for normal growth and micronutrients for normal growth and
development of the human brain & development of the human brain &
body.body.
•The body contains a total of 15–23mg of The body contains a total of 15–23mg of
iodine .iodine .
•Most of its presented in thyroid gland .Most of its presented in thyroid gland .
•Rest of its present in salivary, mammary, Rest of its present in salivary, mammary,
& gastric glands and the kidney.& gastric glands and the kidney.

3. Recommneded dietary allowancesRecommneded dietary allowances
GROUPSGROUPS µmg/dayµmg/day
AdultsAdults 150150
Infants Infants 9090
Children(1-5years) Children(1-5years) 9090
Schoolage(6-11+) Schoolage(6-11+) 120120
Adolescents Adolescents ³³1212 150150
Pregnancy Pregnancy 200200
Lactation Lactation 200200

4. UPPER LIMIT OF IODINE INTAKE:
(TOxIcITy)
•Excess of iodine ingestion can be harmful , Excess of iodine ingestion can be harmful ,
which may inhibit the synthesis of thyroid which may inhibit the synthesis of thyroid
hormones by thyroid.hormones by thyroid.
•This iodine-induced is known as ’WOIF-This iodine-induced is known as ’WOIF-
CHAIKOFF’.CHAIKOFF’.
•These generally among newborns as These generally among newborns as
NEONATAL CHEMICALNEONATAL CHEMICAL hypothyroidismhypothyroidism

5. SOURcES:
•The National Institute of Nutrition The National Institute of Nutrition
,Hyderabad has carried out a systematic ,Hyderabad has carried out a systematic
study to establish a database on iodine study to establish a database on iodine
content of Indian Foods.content of Indian Foods.
•Iodine content of drinking water in goitrous Iodine content of drinking water in goitrous
area is 3-16area is 3-16mmg/l as comparedg/l as compared to 5-64 to 5-64 mmg/l in g/l in
non goitrous areas .non goitrous areas .

6. DAILy INTAKE OF IODINE:DAILy INTAKE OF IODINE:

7. Fish:
•The iodine content of fish ranges between 28 & 55
mmg/ 100g.g/ 100g.
•Only certain types of fish like sea coast contain Only certain types of fish like sea coast contain
more iodine (175 more iodine (175 mmg/100g) than fresh water fish.g/100g) than fresh water fish.

8. EGG:
•The iodine content of egg ins about 50 The iodine content of egg ins about 50 mmg/ g/
100g.100g.
•Iodine concentrate is more in white protien.Iodine concentrate is more in white protien.

9. Plant Foods:Plant Foods:
•Among other plant food, the millets Among other plant food, the millets
sorghum has more iodine (73 sorghum has more iodine (73 mmg/ 100g).g/ 100g).
•Blackgram(48 Blackgram(48 mmg/ 100g)&mustard (55 g/ 100g)&mustard (55 mmg/ g/
100g)100g)
•Other are cereals & legumes. Other are cereals & legumes.

10. Rich & Poor SourcesRich & Poor Sources
Milk , meat &Egg -
RICH
Fruits&vegetables-
POOR

11. LOOSES DURING COOKING :LOOSES DURING COOKING :
•IODINE content of food is lost in varing IODINE content of food is lost in varing
amounts during cooking process .amounts during cooking process .
•Iodine content of food lowered by 37-70% in Iodine content of food lowered by 37-70% in
Indian cooking process Indian cooking process .

12. THANKTHANK
YOUYOU