Fish means fish. There are many kinds of fish. The main edible freshwater fish include carp, grass carp, crucian carp, mandarin fish, silver carp and tilapia, while marine fish include yellow croaker, hairtail and flounder.

Eating fish generally does not lead to obesity, but we should also pay attention to eating in moderation. But it also depends on the kind of fish and some practices. If you want to lose weight, try to eat some steamed fish. If it is fried, or high in salt and oil, the calories will become very high and the effect of losing weight will not be very good. Generally speaking, fish is rich in protein and low in fat.

Fish is rich in thiamine, riboflavin, nicotinic acid, vitamin D and a certain amount of minerals such as calcium, phosphorus and iron. Although the fat content in fish is low, the fatty acids in it have been proved to have the effects of lowering blood sugar, protecting the heart and preventing cancer. Vitamin D, calcium and phosphorus in fish can effectively prevent osteoporosis.

Old people and people who are hot should eat less fish without scales.

From the perspective of traditional Chinese medicine, fish can be roughly divided into three categories: one is temperate, such as eel, loach, hairtail, grass carp, catfish, chubby fish and so on. These fish are hot and have the effect of tonifying blood and qi, but people with hot constitution and skin diseases should eat as little as possible. The second is cold, such as cuttlefish, soft-shelled turtle and squid. Generally, people with hot constitution can eat more in summer. The third is flat, such as yellow croaker, crucian carp, carp, perch, flat fish, sardines, mackerel and so on. These fish can be eaten by people with cold and hot constitution.

It is important to note that the elderly or people with warm constitution should eat less scale-free fish, including whitebait, river eel, loach, eel and cod. Experts remind that fish without scales belong to hair, and people with hot constitution, that is, people who are prone to get angry, dry mouth, long sores and dry stools, should eat less, otherwise these symptoms will be aggravated. In addition, generally speaking, the cholesterol content of the above kinds of scaleless fish is high, and the elderly with chronic diseases such as coronary heart disease, arteriosclerosis, hypertension and hyperlipidemia should also eat less.