Which is better, animal oil or vegetable oil?

There are two indicators to measure the nutritional value of oil: one is the amount of unsaturated fatty acids; The second is the amount of essential fat branches. Of course, vitamin content, digestibility, storage performance and so on should be considered comprehensively. Let's briefly talk about the nutritional value of several commonly used oils: cod liver oil: the content of unsaturated fatty acids is the highest, rich in vitamin A and vitamin D, but it can't be used for cooking. Butter and grade oil: It contains high saturated fatty acids and cholesterol, as well as vitamin A and vitamin D, but it is not good for patients with hyperlipidemia. Lard: contains more saturated fatty acids and cholesterol, but does not contain vitamins A and D. The digestibility is also slightly lower than that of vegetable oil. Butter and sheep fat: high cholesterol, poor digestion and absorption rate. Sesame oil (sesame oil), soybean oil, peanut oil, rapeseed oil, corn oil, sunflower oil, tea oil and other vegetable oils: contain more unsaturated fatty acids necessary for human body, which can lower blood cholesterol and reduce the risk of arteriosclerosis. Some vegetable oils contain antioxidant vitamin E or sesamol, which improves the storability. It can be seen that the contents of unsaturated fatty acids and essential fatty acids in vegetable oil are higher than those in animal oil (with few exceptions). Because the source of dietary fat comes from animal food rich in oil except cooking, vegetable oil should be used as the main edible oil to make the proportion of fatty acids appropriate. Because animal fat has high calorific value, simple eating method and unique flavor, if the diet is balanced and properly prepared, it should be no problem to eat a little occasionally. According to foreign nutritionists, the suitable ratio of saturated, monounsaturated and polyunsaturated fatty acids in dietary oil is 1: 1: 1, and the daily intake of dietary cholesterol should be less than 300mg.