Omega-3 Fatty Acids May Reduce Prostate Cancer Risk

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Recent research suggests that increasing intake of long-chain omega-3 (LC n-3) polyunsaturated fatty acids may decrease the risk of prostate cancer development and progression. This potential effect may be influenced by genetic variation in cyclooxygenase-2 (COX-2), a key enzyme in fatty acid metabolism and inflammation. A case-control study of 466 men diagnosed with aggressive prostate cancer and 478 age- and ethnicity-matched controls found a strong association between LC n-3 intake and decreased risk of aggressive prostate cancer.

Key Takeaways:

  • A case-control study of 466 men with aggressive prostate cancer and 478 age- and ethnicity-matched controls found that increasing intake of LC n-3 reduced the risk of aggressive prostate cancer.
  • The researchers used a semiquantitative food frequency questionnaire to assess diet and genotyped nine COX-2 tag single nucleotide polymorphisms (SNP) to analyze genetic variation.
  • The study supports the hypothesis that LC n-3 may impact prostate inflammation and carcinogenesis through the COX-2 enzymatic pathway.
  • The association between LC n-3 intake and reduced risk of aggressive prostate cancer was strongest among men with certain variants of the COX-2 gene.
  • The study suggests that LC n-3 may be a potential dietary intervention for reducing the risk of aggressive prostate cancer.
  • The researchers used logistic regression models to estimate odds ratios (OR) for association and interaction between LC n-3 intake and COX-2 genetic variation.
  • The study provides evidence that diet may play a role in prostate cancer risk and that LC n-3 may be a potential therapeutic agent.

Statistics:

  • 466 men diagnosed with aggressive prostate cancer participated in the case-control study.
  • 478 age- and ethnicity-matched controls were also included in the study.
  • The LC n-3 intake was associated with a decreased risk of aggressive prostate cancer (P-trend < 0.001).
  • The study found that men with certain variants of the COX-2 gene had a stronger association between LC n-3 intake and reduced risk of aggressive prostate cancer.
  • The odds ratio (OR) for association between LC n-3 intake and reduced risk of aggressive prostate cancer was not provided in the study.

Sources:

  • Fradet, V., et al. (2009). Dietary Omega-3 Fatty Acids, Cyclooxygenase-2 Genetic Variation, and Aggressive Prostate Cancer Risk. Clinical Cancer Research, 15(7), 2559-2566.