A few days ago, many people's circle of friends were scraped by an article: BBC human experiment, the fat of the war. Its content is known as "reversing the global awareness of obesity": sugar will not be fat, sugar does not increase blood sugar, sugar allows you to exercise when you double strength. Is the truth really like this?

High sugar and high fat diet are not healthy

It is understood that this experiment was done with two twin brothers. The television photographed all the conditions after they had eaten high-sugar and high-fat foods respectively for 4 weeks, and the final physical examination results.

Fan Zhihong, associate professor of nutrition and food safety at the Food College of China Agricultural University, pointed out that the so-called high-sugar foods in the program are staple foods of all kinds, breaded potatoes, fruits and vegetables, and sweet drinks. However, there is no protein-rich food, the fat content is very low, which is not enough essential fatty acids, and the quality of the protein is also relatively low, this diet is actually a high-carbohydrate, low-fat diet.

The program's high-fat foods are minced meat fortress, steak, cheese, eggs, etc. There is no staple food and fruit, and very few vegetables. Extreme shortage of dietary fiber and various phytochemicals, and insufficient supply of vitamin C. This diet is a high-fat, high-protein, low-carbohydrate diet.

Fan Zhihong pointed out that both diets are unhealthy and should not last long. "However, the former is slightly better, because if you use your heart, you can at least eat all kinds of vitamins, minerals, and dietary fiber. The latter will suffer, constipation, vitamin C deficiency, and lack of antioxidant substances. It is inevitable."

Long-term high-fat diet is easy to lack of energy

In the second week of testing, the two players competed in high-intensity mental activity, demonstrating that the high-carbohydrate diet has an advantage in brain activity. As a result, many consumers think that eating sugar is smarter, so that in order to improve memory, you can eat more sweets later.

Fan Zhihong pointed out that the high-carbohydrate diet has an advantage in brain activity. This is because the brain's favorite energy is glucose. Although long-term adherence to low-carbohydrate diets, the brain can also learn to use ketone bodies produced by incompletely oxidized fats. However, if the ketone body level is high, it will have a toxic effect on the body. If there is not a large amount of vegetables matching to avoid the risk of blood acidification, This practice is detrimental to health.

Fan Zhihong reminded consumers not to be misled by this result. This experiment does not prove that eating sweets is conducive to learning and memory. The energy that the brain likes is glucose, and the starch becomes glucose after digestion in the body, so eating food can play this role of supplying blood sugar, and there is no need to eat sweet sugar.

What was tested in the third week was which side was more appetite? The result was a poor appetite in eating meat, and calorie intake was reduced by 400 kcal compared with the high sugar diet. Some people think that if you want to lose weight, you only eat meat, do not eat staple foods, and it is easier to lose weight.

Fan Zhihong pointed out that the reason for the poor appetite of the high-fat diet is because the protein has a very strong satiety, it will stimulate the secretion of cholecystokinin, delay gastric emptying, produce a strong sense of satiety and satisfaction.

However, eating carbohydrates and eating meat only seem to be easy to eat, but it's hard to really eat enough. For Chinese people who have grown up from snacks and starchy foods, especially for girls with poor digestion, eating protein foods is too easy to eat. If you add a lot of high-fiber vegetables, it will be more likely to be full, and the result will be the intake of Heat is lower than reasonable. This is also an important reason why many girls suffer from malnutrition and menstrual disorders when they lose weight with low-carbon water.

Be alert to high sugar + starch diet

After four weeks of testing, both brothers underwent a weight test. The weight of sugar can be reduced by 1 kg, and 0.5 kg of muscle can be reduced; the weight of meat can be reduced by 3.5 kg and 2 kg of muscle can be reduced. At the same time, people who eat sugar have normal blood sugar levels, and people who eat meat have elevated blood sugar levels.

For this test result, Fan Zhihong reminded that eating meat does not increase muscles well. Carbohydrates have the function of “saving protein” and “helping fat break down.” Due to the shortage of carbohydrates, a large amount of protein is wasted as energy, and fat cannot be fully decomposed, resulting in “ketosis” and making the body taste bad. Ketosis consumes muscle and fat, making people look lean and fast. However, as soon as you resume eating foods containing starch and sugar, your weight will rebound quickly.

However, if we eat so many sweet foods and white starch foods, will people really become thinner?

Fan Zhihong pointed out that this may vary from person to person. For young men and sportsmen, there are no obvious problems with eating more carbohydrates, but for those with less exercise,

People with weak muscles may not be the same.

Fan Zhihong reminds consumers that this "glycolipids" test experiment simply cannot answer the question of whether sugar is good or fat is good. The final winner of the experiment was neither sugar nor fat, and it was probably starch sugar manufacturing. Because this article is likely to succeed in ignoring the reader's loss of vigilance on the diet of large amounts of sugar and a large amount of white starch.

Fan Zhihong reminded that in daily diets, we must pay attention to desserts, cookies, and crispy breads away from those cake shops, and stay away from supermarket chips, casseroles, Saqima, far from fried fritters, durian cakes, scallion cakes, etc. .

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