TIME | How Fish Oil Makes Chemo Less Effective TIME It wasn't something Dr. Emilie Voest and his colleagues expected to see, but in their labs, they found a disturbing connection between fatty acids and their effect on chemotherapy drugs. Fatty acids—the good fats found in fish like mackerel, salmon ... Necessity of Fish Oil Supplements Debated Cancer patients should avoid fish oil before chemotherapy, study finds Fish oil may reduce chemotherapy's effectiveness: study |