Omega-3 is one of the rare instances here Health Renewal recommends you take a supplement instead of getting it from your food. Be cautious of eating fish, unless you know they have been tested and are mercury free. Fish, whether farm-raised or caught from the ocean or freshwater sources, must be carefully selected as almost all fish are contaminated with mercury, PCBs and DDT. The only exceptions to this rule are fish like sardines and anchovies, as they are small enough to have minimal contamination. Haddock and wild Alaskan salmon is also less likely to be contaminated with high levels of mercury. Unless you find a source of lab-verified clean and pure fish, then supplements would be your best source of omega-3. But for those of you who can't (the vast majority of people), a supplement is your next best option. In addition, supplementing with Spirulina also helps to 'detoxify' fish and also has numerous other health benefits.