Dietary patterns in relation to prostate cancer in Iranian men: a case-control study.
BACKGROUND
Prostate cancer is the most frequently occurring cancer among males in economically developed countries. Among the several risk factors that have been suggested, only age, ethnicity, diabetes, and family history of prostate cancer are well-established and primary prevention of this disease is limited. Prior studies had shown that dietary intake could be modified to reduce cancer risk. We conducted a hospital-based, case- control study to examine the association between dietary patterns and prostate cancer risk in Iran.


METHODS
A total of fifty patients with prostate cancer and a hundred controls underwent face-to-face interviews. Factor analysis was used to determine the dietary patterns. Multivariate logistic regression was used to estimate odds ratios (ORs) and 95% confidence intervals (CIs).


RESULTS
We defined two major dietary patterns in this population: 'western diet'(high in sweets and desserts, organ meat, snacks, tea and coffee, French fries, salt, carbonated drinks, red or processed meat) and 'healthy diet' (high in legumes, fish, dairy products, fruits and fruit juice, vegetables, boiled potatoes ,whole cereal and egg). Both Healthy and western pattern scores were divided into two categories (based on medians). Higher scores on Healthy pattern was marginally significantly related to decreased risk of prostate cancer (above median vs below median, OR =0.4, 95%CI=0.2-1.0). An increased risk of prostate cancer was observed with the higher scores on the Western pattern (above median vs below median, OR=4.0, 95%CI=1.5-11.0).


CONCLUSIONS
The results of this study suggested that diet might be associated with prostate cancer among Iranian males.
Community Nutrition Department, Faculty of Nutrition Sciences and Food Technology, National Nutrition and Food Technology Research Institute (WHO Collaborating Center), Tehran, Iran E-mail : rashidkhani@yahoo.com, b_rashidkhani@sbmu.ac.ir.
Faezeh
F
Askari
Mehdi Kardoust
MK
Parizi
Mahsa
M
Jessri
Bahram
B
Rashidkhani
D000328:Adult; D000368:Aged; D016022:Case-Control Studies; D004032:Diet; D005247:Feeding Behavior; D006801:Humans; D007492:Iran; D008297:Male; D008875:Middle Aged; D011471:Prostatic Neoplasms / Q000209:etiology*; D012307:Risk Factors