The main component of refined vegetable oil is trans fatty acid. It is extremely harmful to human body. Trans fatty acids are unhealthy ingredients, which are far more harmful to the heart than any animal oil. Foods containing hydrogenated vegetable oil may contain trans fatty acids, such as biscuits, bread, western cakes, chocolate pie, salad dressing, French fries, fried chicken pieces, onion rings, coffee partners, hot chocolate and so on. However, many names of trans fatty acids, such as hydrogenated vegetable oil, vegetable shortening, margarine, margarine, vegetable butter, margarine, shortening or non-dairy creamer, all contain trans fatty acids. Trans fatty acids are more harmful to human body than saturated fatty acids, which not only affects human immune system, but also increases the content of low-density lipoprotein cholesterol harmful to human body, reduces the content of high-density lipoprotein cholesterol beneficial to human body, promotes arteriosclerosis and increases blood viscosity and cohesion. Experiments show that the whole blood agglutination reaction of people who consume 6% calories is significantly higher than that of people who consume 2% calories. It can be seen that trans fatty acids are easy to cause thrombosis, leading to myocardial infarction and cerebral embolism. Trans fatty acids can be directly transported to the fetus through the placenta, and the intake of margarine by the mother can make the baby passively ingest trans fatty acids through breastfeeding, thus reducing the secretion of male hormones, affecting the growth and development of the fetus and the baby, adversely affecting the development of the central nervous system, making the thinking not agile and the memory impaired. Trans fatty foods produce more calories, which often leads to obesity. Recently, a research team at Harvard University found that trans fatty acids are a risk factor for diabetes, which is more harmful than saturated fatty acids. It is calculated that if trans fatty acids, which account for 2% of the total calories of food, are replaced by unsaturated fatty acids, the risk of diabetes can be reduced by 40%. In view of the harm of trans fatty acids to human health, Europe and Denmark are the first countries in the world to limit the content of trans fatty acids in food. According to the law, the content of trans fatty acids in oil should not exceed 2% from June 5438+1 October12004. In the dietary guidelines published in August 2004, the United States suggested that the average daily intake of trans fats should be lower than 1% of total calories. All restaurants in new york, USA stopped using cooking oil containing trans fats from July 1 day, 2007, and completely banned foods containing trans fats from July 1 day, 2008. There is no clear restriction on the application of trans fats in food in China. In order to reduce the incidence of obesity, diabetes and cardiovascular diseases, middle-aged and elderly people should stay away from trans fats. Please pay attention to the ingredients when buying food. Please avoid those marked refined vegetable oil, hydrogenated vegetable oil, hydrogenated oil, margarine and margarine. & lt/SPAN>。 & lt/SPAN>。