After beginning of autumn, many people began to paste autumn fat according to traditional folk customs, hoping to nourish their bodies, enhance their physique, save nutrition and prepare for the near winter. Among these people who pursue dietotherapy, some patients with hypertension, hyperlipidemia and hyperglycemia will want to know whether fish head soup can be drunk. The nutritionist's answer is no. Why?

Fish head soup is milky white, rich and mellow, delicious and unusual, and looks very nutritious. So many people think that protein, calcium and other nutrients are dissolved in white soup. This is actually a misunderstanding. Meat soup (fish, broth) is rich in fat, but lacking in other nutrients. Protein in a bowl of fish soup only accounts for about 2% of fish, but it concentrates 40% of the fat in fish.

The formation process of this milky thick soup is actually the process of fat emulsification. Cooking experience tells us that if you want to stew milky soup, you must choose fresh animal raw materials rich in protein and fat, and you must fry the fish head before cooking the soup, and then cook it with strong fire to keep the soup boiling.

In this boiling process, the fat contained in edible oil and raw materials, some water-soluble protein in muscle tissue and lecithin in bone will be dissolved out, and collagen in skin will be partially hydrolyzed into gelatin molecules. When the soup in the pot keeps boiling, the adipose tissue will be crushed into fine particles.

Lecithin, gelatin molecules and some emulsified proteins act as emulsifiers in this process, forming an oil-in-water emulsion, which makes the soup sticky and white, and finally becomes a "milk soup". Therefore, "milk soup" is "emulsified fat", and fish soup without fat generally does not appear milky white.

Eating this boiled fish soup for a long time is likely to lead to excessive fat intake. For hungry people, broth is the happiest food, but for the elderly who need scientific intake of protein, vitamins and dietary fiber and the "three highs" people, drinking fish soup often will lead to excessive fat intake and energy consumption. Excessive calories and fat will directly lead to overweight and obesity, and promote the occurrence of cardiovascular and cerebrovascular diseases. At the same time, the satiety of fish soup will also affect eating other foods, resulting in nutritional imbalance.

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