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  • Colorectal cancer incidence in Australia before and after mandatory fortification of bread flour with folic acid

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    Baade476815-Accepted.pdf (244.5Kb)
    File version
    Accepted Manuscript (AM)
    Author(s)
    Van Der Pols, JC
    Baade, P
    Spencer, LB
    Griffith University Author(s)
    Baade, Peter D.
    Year published
    2021
    Metadata
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    Abstract
    Objective: Mandatory fortification of bread flour with folic acid has helped to reduce incidence of neural tube defects in several countries. However, it has been suggested that folic acid may have potential adenoma-promoting effects, and reports from some countries have suggested that mandatory folic acid food fortification programmes have increased the incidence of colorectal cancer. The objective of this study was to evaluate colorectal cancer incidence patterns before and after introduction of mandatory folic acid fortification of bread flour in Australia in 2009. Design: Data from the Australian Cancer Database was used ...
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    Objective: Mandatory fortification of bread flour with folic acid has helped to reduce incidence of neural tube defects in several countries. However, it has been suggested that folic acid may have potential adenoma-promoting effects, and reports from some countries have suggested that mandatory folic acid food fortification programmes have increased the incidence of colorectal cancer. The objective of this study was to evaluate colorectal cancer incidence patterns before and after introduction of mandatory folic acid fortification of bread flour in Australia in 2009. Design: Data from the Australian Cancer Database was used to plot age-standardised incidence of colorectal cancer. We calculated age-adjusted rate ratios with 95% confidence intervals. Setting: Australia Participants: We used population-level aggregate data obtained from cancer registries. Results: Age-standardised colorectal cancer incidence generally decreased between 1999-2016. Although there was a slight increase in rates in 2010 compared to 2009 (62.8 vs. 61.6 cases per 100,000, age-adjusted rate ratio 1.02 (95%CI 0.99-1.04), joinpoint regression indicated decreases of -0.4% (95%CI -0.7-0.0) per year from 1999 to 2010 and -2.2% (95%CI -3.1 - 1.3) per year from 2010 to 2016. Conclusions: While causation cannot be assessed from these population-level data, our observations indicate that there is no evidence that introduction of mandatory folic acid fortification of bread flour has influenced colorectal cancer incidence in Australia.
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    Journal Title
    Public Health Nutrition
    DOI
    https://doi.org/10.1017/S1368980021000562
    Copyright Statement
    © 2021 The Authors. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
    Note
    This publication has been entered as an advanced online version in Griffith Research Online.
    Subject
    Biomedical and clinical sciences
    Oncology and carcinogenesis
    Australia
    Colorectal cancer
    Folic acid
    Food fortification
    Publication URI
    http://hdl.handle.net/10072/403554
    Collection
    • Journal articles

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