Our dietary knowledge is all wrong?
compiled / Jiang Hanzhong
the daily mail in November 1st, we think we know what to eat - eat less red meat, eat more fiber, eat less saturated fatty acids, eat more fruits and vegetables. Is this eating right? According to the newly published controversial monograph written by Zoe Hakim, a British obesity researcher and nutritionist, this is the wrong way to eat.
Hakim, in his "obesity epidemic: Causes and Countermeasures", made a detailed study of the results of the study on the support of dietary advice, and found that there were a variety of misunderstandings in the diet. But what is surprising is not what she has put forward, but what she declassified about those misconceptions.
misunderstanding: the rapid increase of obesity is caused by modern life style. According to Zoe Hakim's view, obesity epidemic is not caused by our way of life, but rather from what we eat. The key thing that people don't realize is that until the 70s of last century, the obesity epidemic was never more than two percent of the total British population. "But by the year twenty-first Century, the prevalence of obesity reached two point five percent in the UK," she said.
What's the problem? In 1983, the British government amended dietary advice. After that, if you look at the chart, you will find that the prevalence of obesity is just like getting on an airplane. Maybe you would think this is purely accidental, but I think the reason is obvious.
Hakim said: "the old diet advice is simple, the food made from flour and grain makes people fat, and sweet food is the first to bear the brunt." Then she said, mom and grandma told us to eat animal liver, egg, sardines, but also in the vegetables with butter. But the latest dietary advice is that "diet should be based on starchy foods". Don't forget, according to past knowledge, this kind of food can make us fat. There was a one hundred and eighty - degree turn.
misunderstanding two, starch carbohydrates should be the main content of our diet. We are often told that carbohydrates such as rice, bread and potatoes should be the main content of our diet. Zoe Hakim said the problem is that carbohydrates are decomposed into sugar after digestion. So your body will produce more insulin to deal with excess sugar. One of the main functions of insulin is to store fat. When you take carbohydrates, you are activating the body fat storage mechanism. Carbohydrates that are not converted to energy will soon be stored in the form of fat. We should still return to the stage of "listening to natural arrangements", starting with meat, fish, eggs, vegetables and salad, eating real food and not eating processed food.
misunderstanding three, weight loss is calorie intake and combustion. Hakim said, "if that's the case, everything will be easy." Many people do believe that a reduction of five hundred calories per week will reduce half a kilogram of body weight in a week. This may be the case at the beginning, but once the body realizes that it is starving, it closes the system to store energy. "You may have less calories, and less calories for your day."
in his view, losing weight is more about fat consumption than consumption. You should let the body enter the pattern of burning fat. To achieve this goal, you should reduce the consumption of carbohydrates rather than calories.
misunderstanding four, more exercise is a good way to treat obesity epidemic. This is a commonsense. Exercise burns calories, reduces fat and speeds up metabolism. He advised people to think twice. "If you increase your exercise, the effect is just the opposite, because exercise can make you feel hungry. Your body needs to absorb carbohydrates and supplement lost calories. If you want to control your weight, the simple way is to control what you put in your mouth. It's not how much you eat, but what you eat. It's very unimportant for you to exercise or not.
misunderstanding five, fat is harmful to us. Hakim said, "real fat is harmless to us, but artificial fat is the devil we should drive away." We think so because meat is rich in saturated fatty acids. One hundred grams of pork has two point three grams of unsaturated fatty acids, one point five grams of saturated fatty acids. Fat is essential to every cell in the body. According to the two UK eight year family diet survey, the fat soluble vitamin A, D and E in the UK are insufficient. These vitamins are important for maintaining vision, increasing bone strength, keeping mental health, preventing cancer and protecting blood vessels. We need to take in real fat so that the body can have important vitamins to absorb.
misunderstanding six, saturated fatty acids cause heart disease. In the past fifty years, we have no doubt about such a healthy truth. But Hakim said: "no research has fully confirmed that saturated fatty acids intake is associated with heart disease, not to mention heart disease."
misunderstanding seven, cholesterol is a major enemy of diet. Huck did not think that "high cholesterol level is a bad thing", which is controversial. "If the blood contains five millemos of cholesterol, you can say that everyone's cholesterol level can't be higher than this figure. It's no difference that the height of each person is one point six two meters. If the person's height exceeds that number, it is necessary to use drugs to reduce it. It's awful! "
Hakim said Ansel Keith, a late cholesterol researcher in the United States, has extensively studied cholesterol in the 50s of last century. From a taxonomic perspective, he says, cholesterol in food has no effect on cholesterol in the blood. If anything goes wrong, that's the amount of carbohydrate we consume, especially the amount of refined carbohydrates. It has been proved that carbohydrates determine the level of triglyceride. Triglycerides are part of your cholesterol level. Your general practitioner may be most concerned about this. "This is a wonderful irony! We only tell people to eat carbohydrates, because we demonize the fat, the target is wrong, the situation will be even worse.
misunderstanding eight, should eat more fiber. In the past thirty years, we have been pluning fibers into our bodies, giving us a feeling of fullness and moving our digestive system. It's not a good idea, Hakim said. The advice to eat more fiber is raised with our theory that we need to clean our digestive system. However, basic minerals are absorbed from foods that are still in the intestines. If you wash your intestines at this time, what will be the result? What we should pay attention to is not to eat things that are not good for human body.
misunderstanding nine, eat five servings of fruits and vegetables every day. Hakim said that five copies a day are the most famous nutritional advice. You must think that this is based on solid evidence of good health. In fact, five fruits and vegetables per day were the earliest marketing slogans from twenty-five fruit and vegetable companies and the National Cancer Institute in the United States in 1991. There is no evidence that this is good for cancer prevention.
misunderstanding ten, fruits and vegetables are the most nutritious. Obviously not. Hakim admitted that there should be more vegetables in the diet, but fructose would go directly into the liver and store it as fat. Hakim said that people who are losing weight should not eat fruit. He added: "animal foods - vitamins and minerals in meat, fish, eggs and dairy products can make the vitamins and minerals in fruit fall off.