Vegetable oils are not TFAs, but refined vegetable oils may contain TFAs, and the exact amount is related to the refining process. Vegetable oils are fats and oils obtained from the fruits, seeds, and germs of plants (e.g., peanut oil, soybean oil, canola oil, etc.), which are compounds formed by the reaction of higher fatty acids and glycerol. Vegetable oil contains a variety of unsaturated fatty acids, but not trans fatty acids, while refined vegetable oil may contain trans fatty acids, depending on the refining process, process hydrogenation or high temperature, etc. may produce trans fatty acids. Trans fatty acids are unsaturated fatty acids that are not good for human health. Hydrogenated vegetable oils are the most important food source of trans fatty acids, such as margarine, margarine, margarine and ghee, etc. Consumption of such foods containing high levels of trans fatty acids should also be minimized on a daily basis.