NDLI: Relationship between anthropometric factors, radiation exposure, and colon cancer incidence in the Life Span Study cohort of atomic bomb survivors

Content Provider	Springer Nature Link
Author	Semmens, Erin O. Kopecky, Kenneth J. Grant, Eric Mathes, Robert W. Nishi, buo Sugiyama, Hiromi Moriwaki, Hiroko Sakata, Ritsu Soda, Midori Kasagi, Fumiyoshi Yamada, Michiko Fujiwara, Saeko Akahoshi, Masazumi Davis, Scott Kodama, Kazuri Li, Christopher I.
Copyright Year	2012
Abstract	We examined colon cancer risk in atomic bomb survivors to investigate whether excess body weight after the bombings alters sensitivity to radiation effects.Of the 56,064 Japanese atomic bomb survivors with follow-up through 2002 with self-reported anthropometric data obtained from periodic mail surveys, 1,142 were diagnosed with colon cancer. We evaluated the influence of body mass index (BMI) and height on radiation-associated colon cancer risk using Poisson regression.We observed a similar linear dose–response relationship for the 56,064 subjects included in our analysis and the entire cohort of Japanese atomic bomb survivors [excess relative risk (ERR) per Gray (Gy) = 0.53, 95 % confidence interval (CI) 0.25–0.86]. Elevation in earliest reported BMI, BMI reported closest to colon cancer diagnosis, and time-varying BMI were associated with an elevated risk of colon cancer [relative risk (RR) per 5 kg/m2 increase in BMI = 1.14, 95 % CI 1.03–1.26; RR = 1.16, 95 % CI 1.05–1.27; and RR = 1.15, 95 % CI 1.04–1.27, respectively]. Height was not significantly related to colon cancer risk. Inclusion of anthropometric variables in models had little impact on radiation risk estimates, and there was no evidence that sensitivity to the effect of radiation on colon cancer risk depended on BMI.Radiation exposure and BMI are both risk factors for colon cancer. BMI at various times after exposure to the atomic bombings does not significantly influence the relationship between radiation dose and colon cancer risk, suggesting that BMI and radiation impact colon cancer risk independently of each other.
Starting Page	27
Ending Page	37
Page Count	11
File Format	PDF
ISSN	09575243
Journal	Cancer Causes & Control
Volume Number	24
Issue Number	1
e-ISSN	15737225
Language	English
Publisher	Springer Netherlands
Publisher Date	2012-10-21
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Body mass index Radiation exposure Colon cancer Atomic bomb survivors Cancer Research Biomedicine general Oncology Public Health Epidemiology Hematology
Content Type	Text
Resource Type	Article
Subject	Cancer Research Oncology

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