Role of iodine content of drinking water in the aetiology of goitre in Sri Lanka
نویسنده
چکیده
609 samples of drinking water collected from scattered sources from the eight districts of Kandy, Matale, Kalutara, Anuradhapura, Polonnaruwa, Colombo,. Puttalam and Gampaha were analysed for iodide content using the Orion electrode method. The median iodide content of all districts except Gampaha were above 10 u g / 1 , with Anuradhapura showing the highest content. Districts with low prevalence of goitre had a median iodide content of 57.0 ug/1 while districts with intermediate and high prevalence had median values of 11.4 and 15.2 ug /1 respectively. Tube wells were found .to have a high iodide content while the surface sources had a relatively low iodide content. The rank order correlation between iodide content and the prevalence of goitre was 0.64, suggesting that only 40% of the variability of the goitre prevalence can be explained in terms of iodide content of drinking water. It is concluded that some factors other than iodide content of drinking water may contribute to the aetiology of goitre in Sri Lanka.
منابع مشابه
Iodine in the environment and endemic goitre in Sri Lanka Geological Society, London, Special Publications
The prevalence of endemic goitre is extremely high in certain parts of Sri Lanka where rates as high as 44% have been observed. With nearly 10 million people at risk the aetiology of endemic goitre in Sri Lanka needs to be clearly ascertained. The endemic goitre belt of Sri Lanka coincides with the wet climatic zone, indicating an apparent relationship of iodine geochemistry with climatic facto...
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