Can cancel the upper limit of cholesterol intake is not equal to "capricious"

Recently, a "cholesterol from worrying nutrients removal in blacklist" WeChat around a circle of friends. Studies have confirmed that the intake of cholesterol, it said, neither causes nor prevent heart disease. In response, the Chinese nutrition society, experts remind the public, there would be no limit cholesterol intake, doesn't mean the egg yolk, seafood and animal innards high cholesterol food can "open".

Automatic synthesis of cholesterol in the blood is mainly composed of the body

Cholesterol is widely exists in the body, the participation form the membrane, the important raw material for synthetic hormones, so it is indispensable to human body material. Look from the source, cholesterol can be divided into "homegrown" and "import". Chinese nutrition society, women's and children's club, director of the committee, sun yat-sen university school of public health professor yi-xiang su, automatic synthesis of cholesterol in the blood of the human body is mainly composed of the body, by dietary cholesterol intake accounted for only few.

The latest U.S. dietary guidelines is cancelled in dietary cholesterol intake to less than 300 mg daily limit, caused widespread concern. In fact, the 2013 edition of the reference intake of nutrients in dietary for Chinese people, is no longer set limit for cholesterol intake. Reference to this, a former Chinese dietary nutrients intake of fat (2013) led the team of yi-xiang su said: "according to the results of the analysis of the related studies, even if the cholesterol intake to 768 mg per day, has not found that dietary cholesterol intake is associated with cardiovascular disease morbidity and mortality. Unable to determine the threshold intake of cholesterol increases the risk of chronic disease so temporarily not set limit of dietary cholesterol intake."

Although the guidelines are no longer limiting dietary cholesterol intake, yi-xiang su stressed that hypercholesterolemia patients still need to control dietary cholesterol. "Long-term study, hypercholesterolemia and dyslipidemia is a risk factor for cardiovascular disease." She said.

Dietary cholesterol effect to human body complex

Through the food intake of cholesterol actually have any effect on cholesterol levels in the human body? The Chinese nutrition society, former deputy director, second military medical university, professor zhao Ji believes that the influence of dietary cholesterol on serum cholesterol complex, mainly can be divided into "reduce factors" and "add factors".

It is reported, lower serum cholesterol or influence dietary cholesterol are the main factors: (1) the cholesterol in food can't be absorbed, absorption rate average is 30%; (2) the secretion of bile salt to reduce or excretion disorder (cholesterol need to the bile acid salt in food emulsifying rear can be absorbed) affect the absorption of cholesterol; (3) plant foods do not contain the cholesterol, and the structure of plant sterol is similar to cholesterol, not easy to absorb, more quantity can inhibit the absorption of cholesterol intake; (4) dietary fiber can be combined with bile acid from the eduction in feces, indirectly reduce the absorption of cholesterol.

"Increase or promote dietary cholesterol is the main factor of serum cholesterol fat, particularly saturated fat." , "said zhao method Ji fat can promote the secretion of bile acid, bile acid can promote cholesterol absorption. Dietary fat can also accelerate the transformation of cholesterol and free fatty acids, improve the rate of cholesterol synthesis, which can increase or promote dietary cholesterol, elevated serum cholesterol."

Reasonably circumvent the risk of high cholesterol diet

Research shows that high fat and high cholesterol dietary hyperlipidemia (including hypercholesterolemia) is one of the important risk factors, therefore, to control the high fat and high cholesterol intake to prevent hyperlipidemia is still the key.

"Fat have healthy fats (mainly polyunsaturated fatty acids) and unhealthy fats (mainly trans fatty acids and saturated fatty acids)." U.S. department of the school of public health, university of Iowa epidemic BaoWei Dr Said: "a new version of the journal of the American dietary guidelines to remove on total fat intake is recommended, which is based on the currently, more and more evidence to support some grease is conducive to health. Rather than simply consider the amount of fat intake, we should pay attention to eat what kind of grease."

The world health organization (who) nutrition experts organization committee, zhejiang university department of food science and nutrition professor li also pointed out that the American dietary guidelines suggest using polyunsaturated and monounsaturated fats instead of saturated fat, although cholesterol intake limit was cancelled, hypercholesterolemia and patients with cardiovascular disease should still try to reduce cholesterol intake.

According to the Chinese nutrition society director, a researcher at the Chinese center for disease control and prevention nutrition and health, professor yue-xin Yang said the Chinese residents' dietary guidelines (2016) to be released, the new guidelines emphasize a balanced diet, rational nutrition is the core of health. She suggested that the public do not want credulous network spread false rumors, circle of friends, should be pay more attention to authority release of information, so as not to cause unnecessary harm to the health of themselves and their families.