Sunflower oil is rich in unsaturated fatty acids, such as linoleic acid, as well as vitamin E, phospholipids and other nutrients and phytochemicals, and is considered a healthy edible oil for long-term use as a cooking oil. Normal consumption of sunflower oil is generally not harmful to the human body, the components of which have certain benefits to the human body: 1. Linoleic acid: sunflower oil has a high content of linoleic acid, accounting for about 70%. Linoleic acid is an essential unsaturated fatty acid and is a precursor substance for the synthesis of prostaglandin E. Unsaturated fatty acids have many physiological functions in the body, such as regulating blood pressure and blood lipids, reducing serum LDL and triglyceride content, making it difficult for lipid plaques to adhere to the vascular wall, thus reducing the incidence of atherosclerosis and preventing cardiovascular diseases. In addition, linoleic acid also has the role of preventing inflammation, inhibiting adipocyte differentiation, protecting the gastric mucosal barrier, etc. Proper consumption of sunflower oil is beneficial to the human body; 2, vitamin E: has the role of antioxidant, can prevent aging factor peroxyl lipid generation, to a certain extent can delay the aging of tissue cells, and has the role of endocrine regulation, whitening; 3, other: sunflower oil also contains sterols, squalene, etc. It can promote metabolism, the iron, magnesium, potassium elements, for improving anemia also has a certain role. Although sunflower oil itself is not harmful to the human body, but when cooking, you need to pay attention to avoid heating for too long to avoid the release of aldehydes, causing adverse effects on the organism. Sunflower oil should also be consumed within the expiration date to avoid spoilage, which can affect the health of the body. In addition, sunflower oil should not be consumed in excess, so as not to cause overweight or obesity and induce hypertension, hyperlipidemia and many other diseases.