Watching a live TV program the day before yesterday, the health reminder at the end is actually to eat some lard (animal oil or meat oil), the reasonable ratio of lard to vegetable oil is 1:2. It is popular to say that lard (animal oil or meat oil) is used in combination with vegetable oil (in various ratios), but it is a true fallacy.

　　First of all, this statement is not in line with the recommendations of the "Dietary Guidelines for Chinese Residents 2007". The guide recommends eating a variety of vegetable oils, and does not recommend eating a certain percentage of animal oils. Quite the contrary, "Dietary Guidelines for Chinese Residents 2007" It is recommended that meat oil (and fat) should be eaten less.

　　Second, this argument stems from a misunderstanding of the reasonable proportion of fatty acids in the diet. From the perspective of fatty acid balance, the Chinese Nutrition Society recommends that adult diets should maintain an appropriate ratio of 1:1, 1:1, and 1% saturated fatty acids, polyunsaturated fatty acids, and monounsaturated fatty acids. In other words, intake of a certain amount of saturated fatty acids is not only allowed, but also beneficial. However, there is no reason to draw the conclusion of "appropriate amount of edible animal oil". There are two main reasons:

　　First, the above ratio of 1:1 refers to the entire diet structure, including cooking oil Fatty acids in meat also include fatty acids in animal foods such as meat, eggs, and milk. As we all know, saturated fatty acids are more abundant in animal foods such as meat, eggs and milk. In the absence of animal foods such as meat, eggs, and milk, saturated fatty acids and cholesterol are relatively "sufficient." If you eat some additional animal oil, it is easy to cause too much saturated fatty acids and cholesterol.

　　Second, not eating animal oil will not cause a deficiency of saturated fatty acids. In fact, saturated fatty acids are not "deficient" at all. According to the recommendations of the Chinese Nutrition Society ("Reference Dietary Nutrient Intakes (DRIs) of Chinese Residents"), saturated fatty acid intake should be less than 10% of total energy (both polyunsaturated and monounsaturated fatty acids are 10%). There is no harm in eating less saturated fatty acids. In fact, for patients with dyslipidemia, fatty liver, coronary heart disease, hypertension, and diabetes, saturated fatty acid intake should be reduced to less than 7% of total energy.

　　 Therefore, the suggestion of "combining vegetarian oil (vegetable oil) and meat oil (such as lard)" is wrong, regardless of whether the ratio is 4:3, 2:1, or 10:7. No matter which heavyweight expert announced, it is wrong. Except for people who rarely eat meat, egg, and milk on weekdays, the recommendation to eat meat oil is always harmful.

　　Animal oils, such as lard, butter, butter, cream, etc., contain more saturated fatty acids and cholesterol. Too much saturated fatty acids and cholesterol in the diet can cause dyslipidemia, atherosclerosis, An important risk factor for coronary heart disease. There are also reports that excessive intake of saturated fatty acids will increase the risk of high blood pressure, diabetes, colon cancer, breast cancer and other diseases. Therefore, restricting the intake of saturated fatty acids and cholesterol in the diet has always been an important health promotion measure.