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Height and body fatness and colorectal cancer risk: an update of the WCRF-AICR systematic review of published prospective studies.


ABSTRACT: PURPOSE:There is no published dose-response meta-analysis on the association between height and colorectal cancer risk (CRC) by sex and anatomical sub-site. We conducted a meta-analysis of prospective studies on the association between height and CRC risk with subgroup analysis and updated evidence on the association between body fatness and CRC risk. METHODS:PubMed and several other databases were searched up to November 2016. A random effects model was used to calculate dose-response summary relative risks (RR's). RESULTS:47 studies were included in the meta-analyses including 50,936 cases among 7,393,510 participants. The findings support the existing evidence regarding a positive association of height, general and abdominal body fatness and CRC risk. The summary RR were 1.04 [95% (CI)1.02-1.05, I² = 91%] per 5 cm increase in height, 1.02 [95% (CI)1.01-1.02, I² = 0%] per 5 kg increase in weight, 1.06 [95% (CI)1.04-1.07, I² = 83%] per 5 kg/m2 increase in BMI, 1.02 [95% (CI)1.02-1.03, I² = 4%] per 10 cm increase in waist circumference, 1.03 [95% (CI)1.01-1.05, I² = 16%] per 0.1 unit increase in waist to hip ratio. The significant association for height and CRC risk was similar in men and women. The significant association for BMI and CRC risk was stronger in men than in women. CONCLUSION:The positive association between height and risk of CRC suggests that life factors during childhood and early adulthood might play a role in CRC aetiology. Higher general and abdominal body fatness during adulthood are risk factors of CRC and these associations are stronger in men than in women.

SUBMITTER: Abar L 

PROVIDER: S-EPMC6060816 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature

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Height and body fatness and colorectal cancer risk: an update of the WCRF-AICR systematic review of published prospective studies.

Abar Leila L   Vieira Ana Rita AR   Aune Dagfinn D   Sobiecki Jakub G JG   Vingeliene Snieguole S   Polemiti Elli E   Stevens Christophe C   Greenwood Darren C DC   Chan Doris S M DSM   Schlesinger Sabrina S   Norat Teresa T  

European journal of nutrition 20171028 5


<h4>Purpose</h4>There is no published dose-response meta-analysis on the association between height and colorectal cancer risk (CRC) by sex and anatomical sub-site. We conducted a meta-analysis of prospective studies on the association between height and CRC risk with subgroup analysis and updated evidence on the association between body fatness and CRC risk.<h4>Methods</h4>PubMed and several other databases were searched up to November 2016. A random effects model was used to calculate dose-res  ...[more]

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