1, nutrient loss

The main ingredients in fruit include dietary fiber, vitamins, pectin, polyphenols, organic acids, carotene, carotene, calcium, phosphorus, magnesium, potassium and so on. Among these healthy ingredients, dietary fiber and pectin are mostly insoluble in water. These two ingredients are called seventh nutrients, which are helpful for improving constipation, preventing colon cancer, cardiovascular and cerebrovascular diseases and gallstones, controlling weight and regulating blood sugar. In freshly squeezed juice, almost all of them are filtered out as waste residue.

Secondly, many fruits are rich in vitamin C, which is a good source of vitamin C needed by human body. However, after the fruit is squeezed into juice, the cells in the fruit are destroyed, and vitamin C will be exposed to the air for oxidation, resulting in different degrees of loss, with the most serious loss rate reaching over 90%. Moreover, the polyphenols contained in fruits will quickly oxidize and discolor, thus reducing their nutritional value.

Thirdly, minerals such as calcium and iron and fat-soluble vitamin A/E in fruit will not run into the juice unless the dregs are eaten together.

2, sugar intake exceeds the standard

Squeeze the fruit into juice and filter out the dregs, then the dietary fiber, pectin, vitamin C, vitamin A, vitamin E and some minerals in the fruit are lost, but all the sugar enters the juice, which is easy to cause excessive sugar intake.

We normally eat 1~2 fruits. During the chewing process, the satiety nerve will send out control instructions, which will make people feel full. Take oranges as an example. If you eat at most two oranges at a time, you won't eat them any more. If you squeeze them into juice, it may take 5 to 8 oranges to squeeze out a glass of orange juice. The sugar intake far exceeds that of eating fruits directly, which will increase the risk of obesity and diabetes in the long run.

Another point is that the fruit is solid, and the gastric emptying speed is slow, while the fruit juice is liquid, so it needs no chewing, and the emptying speed in the stomach is very fast, and the absorption speed in the intestine is also very fast, and the blood sugar certainly rises much faster.

3. Increase the risk of gout

Drinking freshly squeezed juice also increases the risk of gout. This is because fruit contains a certain amount of fructose. After a small amount of fructose enters the human body, it can be quickly converted into energy and consumed by the human body. Freshly squeezed fruit juice contains more fructose, which will produce uric acid in the process of decomposition in human body, which will increase the source of endogenous uric acid, and fructose will also inhibit uric acid excretion, resulting in high uric acid level, thus increasing the risk of gout. Studies abroad have found that people who drink orange juice every day will increase the risk of gout by 4 1%, and the more they drink, the more likely they are to suffer from gout.

4. Injury to teeth

After fruit is squeezed into juice, it will release more sugar and acidic substances. Long-term drinking will soften enamel, cause enamel to fall off and increase the risk of dental caries. For children, you don't need to chew freshly squeezed juice. If you don't chew enough, it's easy for deciduous teeth to stay, causing permanent teeth to grow crooked.