Eating Spanish mackerel can nourish the brain.

fish contains DHA (docosahexaenoic acid, commonly known as "brain gold") and EPA (eicosapentaenoic acid), which belong to "omega-3 long-chain polyunsaturated fatty acids" and are essential fatty acids for human body. They are very important for the early development of the brain and vision, and their contents are very high in the cerebral cortex and retina.

It should be noted that methylmercury is contained in fish, and it is often accompanied by DHA/EPA. Scientists have confirmed that methylmercury has neurodevelopmental toxicity, especially on the neurodevelopment of fetus and newborn. However, after careful study, the World Food and Agriculture Organization (FAO) and the World Health Organization (WHO) believe that the advantages of eating fish outweigh the disadvantages in general, but how much fish to eat and what fish to eat cannot be generalized. Scientists in China investigated more than 3 kinds of marine fish that people eat most often in Zhoushan Fishing Ground, and estimated the changes of IQ brought by eating fish. The results showed some interesting findings:

1. The content of DHA/EPA in bonito (a relative of tuna) is the highest, but the more you eat, the worse your brain tonic effect will be.

2. Oblique-toothed sharks have the most methylmercury (the same is true for shark fins), but their IQ drops after eating them, so don't think that expensive ones must be good.

3. The content of methylmercury in mullet was the lowest, but the content of DHA/EPA held back, and the effect of nourishing brain was average.

4. According to the diet structure of ordinary people, Spanish mackerel has the best brain tonic effect; The second place is saury, but its price is relatively high.

5. Golden pomfret, sea bass and small yellow croaker also have good brain tonic effects, and their prices are relatively approachable.

Extended information:

Different fish need to eat different amounts to achieve the best brain tonic effect. The four kinds of fish recommended above, Spanish mackerel, golden pomfret, sea bass and small yellow croaker, have the best consumption per week: Spanish mackerel in two halves; Golden pomfret 3 halves; Sea bass 3 halves; Small yellow croaker 4 Liang. Cultured salmon is also a good choice. You can get enough DHA/EPA by eating about 3 taels a week, but its price is slightly higher than the above four kinds.

As some common marine fish are not included in the study, such as cod, saury, catfish, turbot, etc., specific suggestions cannot be given here. Generally speaking, the more wild, deep-sea, large, carnivorous fish, the more careful you should be. Other studies have shown that the content of DHA per 1 grams of fatty acid in women's breast milk in coastal areas and rivers and lakes is .47 and .41 grams respectively, so some researchers suggest that freshwater fish and marine fish can be eaten in half.

People's Network-Eat fish to nourish the brain, and Spanish mackerel wins.