Abstract
Thyroid cancer is the most common cancer (90%) of the endocrine system and is responsible for 0.5% of all cancer deaths. The incidence of thyroid cancer is thought to be rapidly and steadily increasing in recent decades. Recent studies have described thyroid cancer as the 4th most common cancer today, up from 14th in the early 1990s. This increase is mainly due to various environmental factors including: radiation, smoking, obesity, pollutants such as pesticides, phthalates, polychlorinated biphenyls, perfluorinated compounds, bromine flame retardants, perchlorates, nitrates and various elements such as metals, non-metals and metalloids. In particular, some metals such as iron, copper, cadmium, lead, vanadium, chromium, manganese and nickel have a positive effect, while others such as zinc and magnesium have a negative correlation with thyroid cancer. Other metals such as molybdenum, tin and cobalt appear to increase the incidence of thyroid cancer in combination, while sodium, mercury, aluminum and silver have no evidence of thyroid carcinogenicity. Of the non-metals, iodine and selenium deficiency are associated with carcinogenic effects on the thyroid, while there is no information on any phosphorus-relative activity. Boron belonging to the metalloids is considered a goitrogenic element and probably increases the incidence of thyroid cancer when it acts in combination with cadmium, molybdenum, taken in small non-toxic doses, for a long time. Finally, air pollution has been studied. It has been found that originating from gaseous waste is associated with an increased incidence of cancer in various anatomical areas, including the thyroid.
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I. Legakis, A. Barbouni and G. Chrousos declare that they have no conflict of interest.
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Legakis, I., Barbouni, A. & Chrousos, G. The importance of toxic environmental substances in the development of thyroid cancer. Toxicol. Environ. Health Sci. 14, 101–109 (2022). https://doi.org/10.1007/s13530-022-00127-8
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DOI: https://doi.org/10.1007/s13530-022-00127-8