In mice that were engineered with a genetic defect that caused prostate cancer, a diet high in omega-3 fatty acids beginning at birth reduced tumor growth, slowed disease progression and increased survival, according to the study published online in the Journal of Clinical Investigation.
Mice with the tumor suppressor gene -- the gene Pten is absent in 60% to 70% of metastatic cancers in humans -- remained free of tumors and had 100% survival, regardless of diet.