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A recent countrywide population-based case-control study in the multiethnic population of
Caledonian women including 293 cases of thyroid cancer and 354 population controls
investigated foods rich in iodine and cruciferous vegetables to ascertain
the high incidence of reported rates of thyroid cancer in New Calendonian women.

The authors noted a correlation between the ingestion of cruciferous vegetables,
thyroid cancer and low intake of dietary iodine.

Truong T, Baron-Dubourdieu D, Rougier Y, Guenel P. Role of dietary iodine and cruciferous vegetables in thyroid cancer: a countrywide case-control study in New Caledonia. Cancer Causes Control 2010;21(8):1183-92.