Margaret R. Karagas

TL;DR: Both toenail and water measurements of arsenic reproducible over a three- to five-year period are found, and biologic markers may provide reliable estimates of internal dose of low level arsenic exposure that can be used to assess cancer risk.

TL;DR: An population-based study indicates an increased cancer risk after NMSC that cannot be fully explained by known cancer risk factors.

TL;DR: Radiation treatment, particularly if experienced before age 20, seems to increase the long-term risk of both basal and squamous cell carcinomas of the skin, which may differ by sun exposure or host response to sunlight exposure.

TL;DR: Investigation of environmental and human tissue concentrations of arsenic and mercury in the gold mining town of Siuna, Nicaragua found Mercury concentrations in fingernail samples were correlated with residential proximity to the mine, drinking water concentrations, occupation, and, among children, with soil concentrations.

TL;DR: It is suggested that arsenic exposure at levels common in the United States relates to SCC and that arsenic metabolism ability does not modify the association.