In this Ask a Nutritionist episode, dietitian Alyssa Krejci explains the difference between fish oil and cod liver oil and how to choose the right one for your needs. Learn how omega-3 fats support heart, brain, and inflammation health, why EPA and DHA matter, and when cod liver oil’s added vitamin A and vitamin D may or may not be helpful. Alyssa also shares simple tips for choosing a quality omega-3 supplement and getting more omega-3s from foods like salmon, sardines, and mackerel.