TY - JOUR
T1 - Bladder cancer and exposure to water disinfection by-products through ingestion, bathing, showering, and swimming in pools
AU - Villanueva, Cristina M.
AU - Cantor, Kenneth P.
AU - Grimalt, Joan O.
AU - Malats, Nuria
AU - Silverman, Debra
AU - Tardon, Adonina
AU - Garcia-Closas, Reina
AU - Serra, Consol
AU - Carrato, Alfredo
AU - Castaño-Vinyals, Gemma
AU - Marcos, Ricard
AU - Rothman, Nathaniel
AU - Real, Francisco X.
AU - Dosemeci, Mustafa
AU - Kogevinas, Manolis
PY - 2007/1/1
Y1 - 2007/1/1
N2 - Bladder cancer has been associated with exposure to chlorination by-products in drinking water, and experimental evidence suggests that exposure also occurs through inhalation and dermal absorption. The authors examined whether bladder cancer risk was associated with exposure to trihalomethanes (THMs) through ingestion of water and through inhalation and dermal absorption during showering, bathing, and swimming in pools. Lifetime personal information on water consumption and water-related habits was collected for 1,219 cases and 1,271 controls in a 1998-2001 case-control study in Spain and was linked with THM levels in geographic study areas. Long-term THM exposure was associated with a twofold bladder cancer risk, with an odds ratio of 2.10 (95% confidence interval: 1.09, 4.02) for average household THM levels of >49 versus ≤8 μg/liter. Compared with subjects not drinking chlorinated water, subjects with THM exposure of >35 μg/day through ingestion had an odds ratio of 1.35 (95% confidence interval: 0.92, 1.99). The odds ratio for duration of shower or bath weighted by residential THM level was 1.83 (95% confidence interval: 1.17, 2.87) for the highest compared with the lowest quartile. Swimming in pools was associated with an odds ratio of 1.57 (95% confidence interval: 1.18, 2.09). Bladder cancer risk was associated with long-term exposure to THMs in chlorinated water at levels regularly occurring in industrialized countries. Copyright © 2006 by the Johns Hopkins Bloomberg School of Public Health. All rights reserved.
AB - Bladder cancer has been associated with exposure to chlorination by-products in drinking water, and experimental evidence suggests that exposure also occurs through inhalation and dermal absorption. The authors examined whether bladder cancer risk was associated with exposure to trihalomethanes (THMs) through ingestion of water and through inhalation and dermal absorption during showering, bathing, and swimming in pools. Lifetime personal information on water consumption and water-related habits was collected for 1,219 cases and 1,271 controls in a 1998-2001 case-control study in Spain and was linked with THM levels in geographic study areas. Long-term THM exposure was associated with a twofold bladder cancer risk, with an odds ratio of 2.10 (95% confidence interval: 1.09, 4.02) for average household THM levels of >49 versus ≤8 μg/liter. Compared with subjects not drinking chlorinated water, subjects with THM exposure of >35 μg/day through ingestion had an odds ratio of 1.35 (95% confidence interval: 0.92, 1.99). The odds ratio for duration of shower or bath weighted by residential THM level was 1.83 (95% confidence interval: 1.17, 2.87) for the highest compared with the lowest quartile. Swimming in pools was associated with an odds ratio of 1.57 (95% confidence interval: 1.18, 2.09). Bladder cancer risk was associated with long-term exposure to THMs in chlorinated water at levels regularly occurring in industrialized countries. Copyright © 2006 by the Johns Hopkins Bloomberg School of Public Health. All rights reserved.
KW - Bladder neoplasms
KW - Disinfection
KW - Drinking
KW - Inhalation
KW - Skin absorption
KW - Trihalomethanes
KW - Water supply
U2 - https://doi.org/10.1093/aje/kwj364
DO - https://doi.org/10.1093/aje/kwj364
M3 - Article
SN - 0002-9262
VL - 165
SP - 148
EP - 156
JO - American Journal of Epidemiology
JF - American Journal of Epidemiology
ER -
