Abstract
Objective
To study the associations between intake of various types of fat and risk of prostate cancer (PCa) in a population-based cohort.
Methods
We have studied 10,564 initially cancer-free men of the Malmö Diet and Cancer cohort, aged 45–73 years. Diet was assessed by a modified diet history method. Cases and clinical characteristics were ascertained via national and regional registry data.
Results
During a mean follow-up of 11.0 years, 817 incidental PCa cases were diagnosed. Out of these, 281 were classified as advanced. There were 202 cases occurring before 65 years of age. After adjustment for age and energy intake, there was no association between intake of any types of fat and risk of PCa, or between fat intake and advanced PCa or PCa occurring in persons aged <65 years. However, we observed positive associations between intakes of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) and risk of PCa. After adjustment for multiple confounders, the latter associations were weakened, but the results were otherwise virtually unchanged.
Conclusions
This large study, with high-validity dietary data, does not support an association between intake of total, saturated, or mono-unsaturated fat and PCa risk. The observed associations between EPA/DHA intakes and PCa are difficult to interpret.
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Acknowledgments
We would like to thank Ulla Lindström, RN, Dept. of Urology, Malmö University Hospital for retrieval of clinical data. We also thank the staff and participants of the Malmö Diet and Cancer Study.
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Financial support has been received from the Swedish Cancer Society, the Swedish Medical Research Council, Region Skåne, The Swedish Nutrition Foundation and the Ernhold Lundström Research Foundation.
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Wallström, P., Bjartell, A., Gullberg, B. et al. A prospective study on dietary fat and incidence of prostate cancer (Malmö, Sweden). Cancer Causes Control 18, 1107–1121 (2007). https://doi.org/10.1007/s10552-007-9050-4
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DOI: https://doi.org/10.1007/s10552-007-9050-4