Can walnuts and fish be eaten together?
Generally speaking, walnuts and fish can be consumed together, but it is not recommended to eat them in large quantities. The detailed explanation is as follows:

Fish is rich in high-quality protein, Omega-3 unsaturated fatty acids, and minerals such as calcium and iron, which are highly beneficial for brain development, cardiovascular health, and immune system enhancement. Walnuts, on the other hand, contain abundant unsaturated fatty acids, plant protein, vitamin E, and trace elements like zinc and magnesium. They help improve brain function, provide antioxidant effects, and help regulate blood lipid levels. When consumed together, the Omega-3 in fish works synergistically with the alpha-linolenic acid in walnuts to enhance neural cell activity. Additionally, the vitamin E in walnuts, when combined with protein from fish, strengthens antioxidant effects and delays cellular aging. Moreover, the nutty aroma of walnuts complements the savory flavor of fish, enriching the overall texture and taste of the meal.
Although fish offers many health benefits, it contains high levels of purines. Individuals experiencing gout flare-ups or those with high uric acid levels should consume it in moderation. Walnuts are also high in fat, and excessive consumption may lead to obesity or gastrointestinal discomfort. Therefore, moderate intake is advised. For cooking, consider steaming fish and pairing it with crushed walnuts, or prepare a fish soup with walnuts, avoiding high-temperature frying to preserve nutritional value.