Introduction: When cooking dishes, cooking oil is a thing we must put, whether it is stir-fried vegetables or stewed soup, almost all of them are indispensable to use cooking oil to moisten the pot, of course, under normal circumstances, we usually try to minimize the intake of edible oil, otherwise it will have an impact on physical health or vascular health.
In our daily life, the more common edible oil, there are peanut oil, corn oil, rapeseed oil, etc., these three oils are more commonly used in daily life.

Each kind of consumption has its extraction method and the original drug is different, we go to the supermarket to buy edible advantages, if the heart is not firm enough, it is likely to be biased by some salesmen, do not know how to choose edible oil.
Today we will take a look at it together,
Which of these three oils is healthier?
I hope that today's sharing will make it easier for you to choose in the process of purchasing edible oil in the future.
It is also possible to choose edible oil suitable for good health.
01
Which oils are healthier, peanut oil, rapeseed oil, corn oil?
Corn oil – good for the heart
The name corn oil comes from corn germ, corn germ has a high nutritional value, corn oil extracted from this food, and the unsaturated fatty acids it contains are mainly linoleic acid and oleic acid.
Corn oil is high in vitamin E and essential fatty acids, and it also contains a nutrient that can reduce the probability of heart disease - plant alcohol, so it can play a role in protecting the heart.
However, the linoleic acid in corn oil is not heat-resistant, so corn oil is easy to oxidize and polymerize after frying or repeated heating, which is harmful to health.
Therefore, corn oil is afraid of heat, suitable for stewing, daily stir-frying, not suitable for frying.
Peanut oil – slows down brain aging
Peanut oil is an oil often eaten by every household, which is rich in choline substances, which can help delay the aging of brain cells and improve memory.
But peanut oil is high in protein and fat, and it's best to eat as little as possible for people with indigestion or chronic gastritis.
Rapeseed oil – regulates blood lipids
The nutritional value of rapeseed oil is similar to that of olive oil, and the oleic acid content is relatively high, accounting for about 80%. It should be known that the daily appropriate intake of oleic acid by the human body has a certain help in regulating blood lipids, which is very suitable for middle-aged and elderly people.
However, rapeseed oil is rich in a long-chain fatty acid, called erucic acid, if you eat a long-term edible oil rich in erucic acid, resulting in excessive accumulation of erucic acid in the body, it is easy to cause thickening of blood vessel walls and myocardial fat deposition.
02
Reminder: These 2 oils should be touched as little as possible
Cooking oil that has been opened for more than 3 months
Common cooking oils generally have a shelf life of about 18 months, but this refers to the state of sealing, which can usually only be maintained for three months after opening. Therefore, it is best to use up the open edible oil within three months to prevent spoilage.
Eating spoiled edible oil is very harmful, if you eat a lot at a time or eat a small amount of this oil for a long time, poisoning will occur. In mild cases, adverse reactions to the digestive tract may occur, and in severe cases, blood circulation may be disrupted.
Artificial oil
The last "artificial oil" refers to such as cream, butter, etc., which are generally fatty substances extracted from milk.
This type of oil also contains more saturated fatty acid substances, high cholesterol content, and extremely high calories, so try to apply less butter when eating bread, and buy as little packaged food with butter in the ingredient list.
Conclusion: Many people like to eat an oil for a long time, in fact, this is also a wrong approach, often eating an oil is easy to cause nutritional imbalance in the body, resulting in poor nutrient absorption efficiency, so it is recommended that everyone always have two kinds of oil at home, often change it, which is more conducive to maintaining our health.