Men who eat large amounts of fatty fish, such as salmon, herring, and mackerel, are two to three times less likely to develop prostate cancer than men who rarely eat fish, say researchers from the Karolinska Institute in Stockholm.
وهذه الدراسة ،‏ التي دامت ٣٠ سنة وشملت ٢٧٢‏,٦ رجلا ،‏ اخذت بعين الاعتبار عوامل تزيد من خطر الاصابة مثل التدخين .‏