Salt iodization thyroid cancer

We will analyze those thyroid cancers that were shown to have undergone changes in their incidence after the implementation of iodine prophylaxis in different endemic goiter areas, probably through the effect of dietary iodine in relation to serum thyrotropin (TSH) levels and increase of thyroiditis, as well as in relation to the standard of medical care. We will also focus on the effect of salt iodization... 

Note-. PC, papillary carcinoma FC, follicular carcinoma UC, undifferentiated carcinoma MC, medullary carcinomas TL, thyroid lymphoma NA, not applicable (TL none in males and before salt iodination, MC two and three cases before and after prophylaxis, respectively). Thyroid cancer by type, mean age and gender before (1958-1972) (I) and after (1985-2003) (II) salt iodization in the province of Salta, Argentina. 

Differentiated thyroid cancer before and after salt iodization... 

Table 84.3 Changes of the ratio of papillary to follicular thyroid cancer in Austria from 1952 to 1995 due to salt iodization...

Hofstatter (1980) could demonstrate that the ratio of papillary to follicular thyroid cancer changed from 0.2 to 1.1 before and after the first introduction of salt iodization in 1963. We investigated the influence of the elevation in salt iodization to 20 mg Kl/kg salt on the histological types of DTC. Gomez-Segovia et al. (2004) found that, in the period from 1985 to 1989, the ratio was 2.6 and increased to 4.0 between 1990 and 1995. 

Due to the prevalence of iodized salt in the US, the Thyroid Cancer Survivors Association, while stating that noniodized salt is acceptable, places emphasis on low salt recipes and the avoidance of restaurants or processed food in case iodized salt has been used. The British Thyroid Association (2002) similarly advises avoidance of iodized... 

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