Preferably fish. Fish is nutritious and delicious. The ancients said: "The taste of fish is full of flavors. Eating fish is tasteless. " When the ancients created Chinese characters, they attributed the word "fresh" to the word "fish" instead of the word "meat", and regarded fish as the best of "fresh". Therefore, fish has always been a favorite food for people. Fish is not only delicious, but also has many health functions for human body. Children who often eat fish grow faster and have better intellectual development; People who often eat fish are healthier and live longer. The mystery is that fish has the following nutritional and health-care characteristics:

1. Fish is rich in complete protein. Protein contained in fish is completely protein, and the amount and proportion of essential amino acids contained in protein are similar to that of human body, which is most suitable for human needs and easily digested and absorbed by human body. Eating more fish has a protective effect on cardiovascular and cerebrovascular diseases. Studies have shown that the higher the content of protein and sulfur-containing amino acids in the diet, the lower the incidence of hypertension.

2. Low fat content, mostly unsaturated fatty acids. The fat content of fish is generally low, and most of them are only 1%-4%. The fat of fish is mostly composed of unsaturated fatty acids, and the carbon chain of unsaturated fatty acids is long, which can lower cholesterol. Moreover, unsaturated fatty acids contained in fresh fish can prevent or reduce the production of inflammatory mediators in human body, and also have certain preventive and alleviating effects on tracheal inflammation. It is a good food to lose weight.

3. The content of inorganic salts and vitamins is high. Marine fish contains 500- 1000 micrograms of iodine per kilogram of fish meat, freshwater fish also contains 50-400 micrograms of iodine per kilogram of fish meat, and also contains inorganic salts such as phosphorus, calcium and iron. Fish also contains a lot of vitamin A, vitamin D, vitamin B 1 and nicotinic acid. These are all nutrients that the human body needs.

4. Eating fish for depression: Studies have found that there is a special fatty acid in fish, which is related to the "happy hormone" in the human brain. It has the function of relieving mental tension and balancing emotions. People who don't eat fish or eat less fish often have lower levels of "happy hormones". Americans don't often eat fish, so there are more people suffering from depression.