The scientists looked at different types of omega-3 fatty acids from fish oils (EPA and DHA) to see how they behave in the body. By using a special method called C-13 NMR spectroscopy, they found that both EPA and DHA are important for our health. The researchers found that these fatty acids can help reduce inflammation in our bodies and lower the risk of heart problems. They also saw that EPA and DHA have different characteristics that make them unique when studied with this method. The study suggests that both EPA and DHA play significant roles in improving our health when included in our diet.