Every day we eat foods, cooking food oils contain a lot of fat. And you know, fat is also good and bad. Among them, trans fat is a kind of bad fat that may block the arteries and increase the risk of cardiovascular disease. And we usually use the wrong cooking methods. Good fats that are good for health will also turn into bad fats.

Bad fat damages cardiovascular and cerebrovascular

Yes, fat is good and bad. Good fats (such as cis-fat, unsaturated fat) help metabolism and are essential for body growth and development. Trans fats (also known as trans fatty acids) are nothing but bad fats. Foreign studies have shown that trans fats may increase "bad" cholesterol levels in the human body, block arteries, and increase the risk of cardiovascular disease.

Not only that, trans fats also have negative effects on children. Dr. Fang Shi, chief physician of the Department of Nutrition of the First Affiliated Hospital of Sun Yat-sen University in Guangzhou, introduced that the fetus passes through the placenta. Newborn babies can absorb trans-fatty acids through breast milk and affect their absorption of good fat. At the same time, trans-fatty acids also adversely affect the growth and development of the adolescent's central nervous system, inhibiting the synthesis of prostaglandins. Other studies have pointed out that trans fatty acids also reduce the production of male hormones, have negative effects on sperm, and interrupt the reaction of sperm in the body. This is a major event affecting future generations.

The bread has more bad fat

This “bad fat” called trans fat naturally exists in the meat and milk of ruminants such as cattle and sheep. According to Fang Shi, many trans fats are encountered in the life of food processing and are produced by vegetable oils after hydrogenation. It is usually made into margarine or margarine, with trans fatty acids up to 50%.

And the foods we eat like bread, cookies, and cream cakes contain trans fats. "Because this fat has a high melting point and good stability, it can make the food more fragrant, and extend the shelf life." Fang Shi said.

High temperature heating oil becomes bad oil

In daily life, most of the food we use to cook food is vegetable oil, which contains very little trans fat. However, after improper cooking methods, good fats turn into harmful trans fats that increase dramatically.

According to Fang Shi, high oil temperatures can produce trans fats. For example, foods fried in high temperatures, such as pumpkin cakes, fried chicken, and fritters, contain trans fats. Trans fats are also produced if the same oil is used repeatedly.

This reminds everyone that when the cooking oil temperature is not too high, once used oil resolutely drained, do not recycle, so as not to endanger the health.

Not absolutely forbidden to eat

Fang Shi introduced that in foreign countries, trans fats are expressly defined: trans fat in a food does not exceed 2% of the total fat content. In China, there is no clear limit on the amount of trans fat. Those delicious cakes and cookies we usually inevitably eat. Fang Shi said that foreign countries generally regulate the intake of such fat in the total energy intake of 1% to 2%, not so damaging to health. And we can't measure how much trans fat we consume in the day-to-day diet. So, we must not be greedy for gluttony and buns and biscuits as the main food for the day.

Recognize trans fat "vest"

Look at food labels to determine the ingredients of food. However, there is no compulsory decree in China that requires "trans fat" to be marked on food. Therefore, there is almost no "trans fat" directly on the market.

Fang Shi introduced that if the following ingredients in the food label also represent a certain amount of trans fatty acids:

Hydrogenated vegetable oils, partially hydrogenated vegetable oils, hydrogenated fats, partially hydrogenated fats, vegetable shortenings, shortenings, artificial butter, margarine, margarine, and the like.

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