Elevated mercury levels linked with higher prevalence of non-melanoma skin cancer

Higher levels of mercury in the blood were linked with a higher prevalence of non-melanoma skin cancer, the most common human malignancy, in a study published in the British Journal of Dermatology.

For the study, researchers analyzed 2003-2016 data on 29,413 participants in the National Health and Nutrition Examination Survey. The team examined blood levels of different forms of mercury: total mercury, inorganic mercury, and methyl mercury. Compared with individuals with low total mercury, those with high total mercury had nearly double the odds of being diagnosed with non-melanoma skin cancer. Similarly, participants with high methyl mercury had a 1.7-times greater odds of non-melanoma skin cancer compared with those with low methyl mercury. Inorganic mercury levels were non-significantly but positively associated with non-melanoma skin cancer.

Most individuals in the United States are exposed to mercury through consumption of contaminated fish and shellfish.

Source:
Journal reference:

Rhee, J., et al. (2020) Association of blood mercury levels with nonmelanoma skin cancer in the U.S.A. using National Health and Nutrition Examination Survey data (2003–2016). British Journal of Dermatology. doi.org/10.1111/bjd.18797.

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