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International Journal of Epidemiology 2003;32:239-243
© International Epidemiological Association 2003

Special Theme: Cancer

Commentary: The rough world of nutritional epidemiology: Does dietary fibre prevent large bowel cancer?

Debbie A Lawlor and Andy R Ness

Department of Social Medicine, University of Bristol, Canynge Hall, Whiteladies Road, Bristol BS8 2PR, UK.

The first 150 words of the full text of this article appear below.

‘Nutritional information seems awash with conflicting and contradictory messages, so it can be comforting to cling to advice that appears constant. One concept on which the nutritional cognoscenti are united is the value of eating a diet rich in fibre.’1

This quote from a doctor writing in a British broadsheet newspaper illustrates many of the problems faced by nutritional epidemiologists and health practitioners who try to determine the health damaging and health promoting aspects of a population’s diet and provide appropriate dietary advice to its members.1 No doubt this doctor will be frustrated if he reads today’s volume of the International Journal of Epidemiology (IJE) in which the findings of a prospective cohort study by Mai et al. suggest that diets rich in dietary fibre are not protective against colorectal cancer.2

Burkitt is credited with first proposing that dietary fibre was protective against colorectal cancer and other gastrointestinal problems including . . . [Full Text of this Article]


   Evidence from observational studies
 

   Evidence from randomized controlled trials
 

   Why was fibre thought to protect against colorectal cancer?
 

   Conclusions
 

   Funding
 

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