Food patterns, prostate cancer, and Jamaican men

Jackson et al. have studied  the association between dietary patterns and risk of prostate cancer in Jamaican men by conducting a case-control study of the diets of 204 histologically confirmed, newly diagnosed prostate cancer patients and 204 matched control patients attending urology clinics in Jamaica between 2004 and 2007. Diet was assessed by food frequency questionnaire.

Four basic dietary patterns could be identified:

  • A “healthy” pattern of vegetables, fruits and peas and beans
  • A “carbohydrate” pattern, with high loadings for white bread and refined cereals
  • A “sugary foods and sweet baked products” pattern
  • An “organ meat and fast food pattern” with high loadings for high fat dessert, organ meat, fast food and salty snacks.

The authors were not able to identify a significant association between any of the food patterns and risk of prostate cancer. The “healthy” pattern showed an inverse, non-significant association, whereas the “carbohydrate” pattern was positively and insignificantly related to prostate cancer.

The authors conclude that, “Dietary patterns identified in our sample were not associated with risk of prostate cancer.” They go on to state that,  “Further investigations that better define cancer-free subjects and dietary measurements are needed to examine diet and prostate cancer outcomes.”

Prostate Cancer Caribbean suspects that (a) the numbers of men in each arm of this study may not have been sufficiently large to identify a statistically significant difference, and that (b) the structure of the trial — retrospective completion of dietary questionnaires and the case control methodology — may have presented additional problems that would make it difficult to demonstrate a statistical distinction between the eight patient groups in the study.

2 Responses

  1. The association of dietary patterns and risks for prostate cancer do show correlations in other studies around the world. Why are we not picking this up in a high risk area such as Jamaican men?. The blogger seems to believe that low numbers affected the results. I believe that diet is significant as it relates to prostate cancer.

  2. The problem may be no more than the limited amount of research that has been carried out in Caribbean countries.

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

%d bloggers like this: