Iodine's sources and requirements

1. IODINE
SOURCES &
REQURIEMENTS

2. INTRODUCTION:
• Iodine is one of the essentialIodine is one of the essential
micronutrients for normal growth andmicronutrients for normal growth and
development of the human brain &development of the human brain &
body.body.
• The body contains a total of 15–23mg ofThe 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,

3. Recommneded dietary allowancesRecommneded dietary allowances
GROUPSGROUPS µmg/dayµmg/day
AdultsAdults 150150
InfantsInfants 9090
Children(1-5years)Children(1-5years) 9090
Schoolage(6-11+)Schoolage(6-11+) 120120
AdolescentsAdolescents ≥≥1212 150150
PregnancyPregnancy 200200
LactationLactation 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 thyroidwhich 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 asThese generally among newborns as
NEONATAL CHEMICALNEONATAL CHEMICAL hypothyroidismhypothyroidism

5. SOURcES:
• The National Institute of NutritionThe National Institute of Nutrition
,Hyderabad has carried out a systematic,Hyderabad has carried out a systematic
study to establish a database on iodinestudy to establish a database on iodine
content of Indian Foods.content of Indian Foods.
• Iodine content of drinking water in goitrousIodine content of drinking water in goitrous
area is 3-16area is 3-16µµg/l as comparedg/l as compared to 5-64to 5-64 µµg/l ing/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
µµg/ 100g.g/ 100g.
• Only certain types of fish like sea coast containOnly certain types of fish like sea coast contain
more iodine (175more iodine (175 µµg/100g) than fresh water fish.g/100g) than fresh water fish.

8. EGG:
• The iodine content of egg ins about 50The iodine content of egg ins about 50 µµg/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 milletsAmong other plant food, the millets
sorghum has more iodine (73sorghum has more iodine (73 µµg/ 100g).g/ 100g).
• Blackgram(48Blackgram(48 µµg/ 100g)&mustard (55g/ 100g)&mustard (55 µµg/g/
100g)100g)
• Other are cereals & legumes.Other are cereals & legumes.

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

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

12. THANKTHANK
YOUYOU