Height and cancer risk in East Asians: Evidence from a prospective cohort study and Mendelian randomization analyses.

Cancer Epidemiol

National Institute of Clinical Research, Fifth People's Hospital of Shanghai, Fudan University, Shanghai, China; Department of Pharmacy, Fifth People's Hospital of Shanghai, Fudan University, Shanghai,  China. Electronic address:

Published: October 2024

AI Article Synopsis

  • - The study analyzed the relationship between height and cancer risk specifically in East Asian populations using data from the China Kadoorie Biobank, finding that increased height correlates with a higher risk of several types of cancer over a median follow-up of 10.1 years.
  • - For every 10 cm increase in height, the risk for overall cancer and specific cancers like lung, breast, and esophageal significantly increased, with hazard ratios indicating a strong association between height and cancer risk.
  • - Mendelian randomization analyses further suggested that genetically predicted height is also associated with higher risks for lung and gastric cancers among East Asians, indicating that height may be a potential causal risk factor for these diseases.

Article Abstract

Background: Height is associated with increased cancer risk, but most studies focus on Western populations. We aimed to evaluate this relationship in East Asians.

Method: Observational analyses were performed utilizing data from China Kadoorie Biobank (CKB) prospective cohort. Adjusted hazard ratios (HRs) and corresponding 95 % confidence intervals (CIs) were estimated using Cox proportional hazards models. Two-sample Mendelian randomization (MR) analyses explored causal effects between height and cancer using data from Korean Genome and Epidemiology Study (KoGES), Biobank Japan (BBJ), and CKB.

Results: Over a median 10.1-years follow-up, 22,731 incident cancers occurred. In observational analyses, after Bonferroni correction, each 10 cm increase in height was significantly associated with higher risk of overall cancer (HR 1.16, 95 % CI 1.14-1.19, P < 0.001), lung cancer (1.18, 95 % CI 1.12-1.24, P < 0.001), esophageal cancer (1.21, 95 % CI 1.12-1.30, P < 0.001), breast cancer (1.41, 95 % CI 1.31-1.53, P < 0.001), and cervix uteri cancer (1.29, 95 % CI 1.15-1.45, P < 0.001). Each 10 cm increase in height was suggestively associated with increased risk for lymphoma (1.18, 95 % CI 1.04-1.34, P = 0.010), colorectal cancer (1.09, 95 % CI 1.02-1.16, P = 0.010), and stomach cancer (1.07, 95 % CI 1.00-1.14, P = 0.044). In MR analyses, genetically predicted height (per 1 standard deviation increase, 8.07 cm) was suggestively associated with higher risk of lung cancer (odds ratio [OR] 1.17, 95 % confidence interval [CI] 1.02-1.35, P = 0.0244) and gastric cancer (OR 1.14, 95 % CI 1.02-1.29, P = 0.0233).

Conclusions: Taller height was significantly related to a higher risk for overall cancer, lung cancer, esophageal cancer, breast cancer, and cervix uteri cancer. Our findings suggest that height may be a potential causal risk factor for lung and gastric cancers among East Asians.

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Source
http://dx.doi.org/10.1016/j.canep.2024.102647DOI Listing

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