Rice Consumption and Squamous Cell Carcinoma of the Skin in a United States Population
Overview
Affiliations
Background: Rice contains arsenic, a known skin carcinogen. Rice intake has been associated with arsenic-related skin lesions in South Asia, but its association with skin cancers is as yet unknown.
Objectives: We aimed to investigate whether rice intake contributes to urinary arsenic concentration and risk of squamous cell carcinoma (SCC) of the skin in a U.S. population.
Methods: Rice consumption was assessed using a food frequency questionnaire administered as part of a population-based case-control study of 487 SCC cases and 462 age- and gender-matched controls. Arsenic concentration in household tap water and urine samples were measured using inductively coupled mass spectrometry (ICP-MS) and high-resolution ICP-MS, respectively. Odds ratios (OR) for SCC associated with the frequency of rice consumption were estimated using logistic regression, with adjustment for age, gender, and caloric intake.
Results: Those who reported any rice consumption had higher urinary arsenic concentrations than those who did not consume rice, and the association was most pronounced among those with <1μg/L arsenic in their household water (19.2% increase in total urinary arsenic, 95% CI: 5.0, 35.3%). Any rice consumption was associated with a 1.5-fold (95% CI: 1.1, 2.0) higher odds of SCC compared with those who reported no rice consumption, and the relation appeared to be largely among those with <1μg/L water arsenic.
Conclusion: Rice consumption may be related to the occurrence of SCC in the United States, especially among those with relatively low drinking water arsenic exposure. https://doi.org/10.1289/EHP1065.
Update of the risk assessment of inorganic arsenic in food.
Schrenk D, Bignami M, Bodin L, Chipman J, Del Mazo J, Grasl-Kraupp B EFSA J. 2024; 22(1):e8488.
PMID: 38239496 PMC: 10794945. DOI: 10.2903/j.efsa.2024.8488.
Arsenic and cancer: Evidence and mechanisms.
Speer R, Zhou X, Volk L, Liu K, Hudson L Adv Pharmacol. 2023; 96:151-202.
PMID: 36858772 PMC: 10860672. DOI: 10.1016/bs.apha.2022.08.001.
The role of drugs and selected dietary factors in cutaneous squamous cell carcinogenesis.
Damps T, Czuwara J, Warszawik-Hendzel O, Misicka A, Rudnicka L Postepy Dermatol Alergol. 2021; 38(2):198-204.
PMID: 34408589 PMC: 8362749. DOI: 10.5114/ada.2021.106196.
Association between rice consumption and risk of cancer incidence in the California Teachers Study.
Sanchez T, Klu Y, Genkinger J, Lacey Jr J, Chung N, Navas-Acien A Cancer Causes Control. 2020; 31(12):1129-1140.
PMID: 32974796 PMC: 7572641. DOI: 10.1007/s10552-020-01350-9.
Xu L, Polya D Environ Geochem Health. 2020; 43(7):2505-2538.
PMID: 32347515 PMC: 8275557. DOI: 10.1007/s10653-020-00573-8.