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 19 February 2018

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News

Olive oil seems to protect against bowel cancer, but meat and fish are bad

Olive oil seems to protect against bowel cancer, suggests research involving 28 countries in the Journal of Epidemiology and Community Health.

News image

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Researchers analysed information from databases from the International Agency for Research in Cancer, detailing the rates of cancer for the years 1987 to 1992, as well as food supply data from the Food and Agricultural Organisation of the United Nations.

Details of olive oil consumption were obtained from the International Olive Oil Council. Information on food and bowel cancer patterns was gathered for 28 countries, including most of Europe, the USA, Brazil, Colombia, Canada, and China.

More than three-quarters of the difference in rates of bowel cancer among the different countries studied was explained by three dietary factors. Meat and fish combined were associated with an increased risk; a diet rich in olive oil was associated with a decreased risk.

Three dietary factors influence bowel cancer rates:
Good - olive oil
Bad - meat and fish.

A diet high in meat, rather than one low in cereals and vegetables, seemed to be critical, the research showed. The protective effect of olive oil remained, irrespective of the amount of fruit and vegetables in the diet. Dr Michael Goldacre and colleagues from Oxford, UK, hypothesise that a high meat intake increases the amount of a bile acid, called deoxycyclic acid, which reduces the activity of an enzyme, diamine oxidase (DAO). “DAO is thought to regulate cell turnover in the bowel lining, and its reduction may therefore be important in abnormal cell turnover. Olive oil, on the other hand, seems to reduce the amount of bile acid produced and to increase DAO levels.”

For further information please contact Public Affairs Division, British Medical Association, BMA House, Tavistock Square, London WC1H 9JP, UK. Tel: +44 (0)20 7383 6254 or email: pressoffice@bma.org.uk. After 6 pm and at weekends telephone: +44 (0)1923 350 436 +44 (0)20 8997 3653/+44 (0)20 8674 6294/+44 (0)1525 379792/+44 (0)20 8651 5130.

The BMJ Specialist Journal press release is available to journalists on the BMA website press centre; the EurekAlert website run by the American Association for the Advancement of Science: and on AlphaGalileo, the internet press centre for European science, engineering and technology.

J Epidemiol Community Health 2000; 54: 756-60
21 September 2000

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