Persistence of iodine deficiency in Gangetic flood-prone area, West Bengal, India

In 2000, India revoked the ban on production and sale of non-iodised salt. We conducted a study in the north 24 Parganas district in the state of West Bengal to assess the prevalence of goitre, status of urinary iodine excretion (UIE) level and to estimate iodine content of salts at the household le...

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Bibliographic Details
Published in:	Asia Pacific journal of clinical nutrition Vol. 15; no. 4; pp. 528 - 532
Main Authors:	Sen, Tapas Kumar, Biswas, Akhil Bandhu, Chakrabarty, Indranil, Das, Dilip Kumar, Ramakrishnan, Ramachandran, Manickam, Punnaih, Hutin, Yvan
Format:	Journal Article
Language:	English
Published:	Australia HEC Press 01-01-2006
Subjects:	Child Cluster Analysis Cross-Sectional Studies Female Goiter, Endemic - epidemiology Goiter, Endemic - prevention & control Humans India - epidemiology Iodine - administration & dosage Iodine - deficiency Iodine - therapeutic use Iodine - urine Male Nutritional Status Population Surveillance Prevalence Sodium Chloride, Dietary - administration & dosage Sodium Chloride, Dietary - therapeutic use India
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Summary:	In 2000, India revoked the ban on production and sale of non-iodised salt. We conducted a study in the north 24 Parganas district in the state of West Bengal to assess the prevalence of goitre, status of urinary iodine excretion (UIE) level and to estimate iodine content of salts at the household level. We surveyed 363 school children aged eight to ten years selected using a multistage cluster sampling technique. We estimated goitre prevalence and urinary iodine excretion (UIE) using methods and criteria recommended by the World Health Organization. We estimated the iodine content of salt samples collected from the households of the study subjects using spot iodine testing kit. Of the 363 children, 73 (20%) had goitre. The median UIE was 160 micro g/l (normal: > or =100 micro g/l) and only 6% children had a level below 50 micro g/l. Only 253 of 363 salt samples (70%) were sufficiently iodised. The combination of high goitre prevalence with normal median urinary excretion indicates that the North 24 Parganas district is in transition from iodine deficient to iodine sufficient state. However, the persistence of non-iodised salt consumption indicates that an intensification of universal salt iodisation program is needed. In 2000, India revoked the ban on production and sale of non-iodised salt. We conducted a study in the north 24 Parganas district in the state of West Bengal to assess the prevalence of goitre, status of urinary iodine excretion (UIE) level and to estimate iodine content of salts at the household level. We surveyed 363 school children aged eight to ten years selected using a multistage cluster sampling technique. We estimated goitre prevalence and urinary iodine excretion (UIE) using methods and criteria recommended by the World Health Organization. We estimated the iodine content of salt samples collected from the households of the study subjects using spot iodine testing kit. Of the 363 children, 73 (20%) had goitre. The median UIE was 160 micro g/l (normal: > or =100 micro g/l) and only 6% children had a level below 50 micro g/l. Only 253 of 363 salt samples (70%) were sufficiently iodised. The combination of high goitre prevalence with normal median urinary excretion indicates that the North 24 Parganas district is in transition from iodine deficient to iodine sufficient state. However, the persistence of non-iodised salt consumption indicates that an intensification of universal salt iodisation program is needed.
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ISSN:	0964-7058 1440-6047