DHA walnut oil, mainly to provide the body with the right amount of DHA, has a certain role from the nutritional point of view, but can not treat and prevent diseases. DHA walnut oil is a kind of food, can not replace drugs to treat diseases. It contains flaxseed oil, DHA algal oil and walnut oil, which should not be consumed by young children and people with seafood allergies. Its role is to provide the body with a certain amount of DHA. DHA is a nutrient that can assist in the development of brain cells, improve blood circulation and lower blood lipids. However, it must be clear that brain development requires not only DHA, but also protein, taurine, fatty acids, iron, zinc, iodine, selenium, and numerous other nutrients. So DHA walnut oil has no role in preventing and treating diseases, but from a nutritional point of view, DHA walnut oil can provide the organism with a certain amount of DHA, which has a certain nutritional value.