What is the unhealthiest oil in the world? Most people will answer: gutter oil, cream, oil that has been fried many times at roadside stalls.
But recently, there have been a lot of "soybean oil is not healthy" on the Internet, and even Xiaojiu has seen relevant articles in the relatives group, which scared Jiu's mother to quickly replace the soybean oil at home with peanut oil.
Image source web search
Seeing that so many people were afraid of this, Xiaojiu couldn't help but think: "Soybean oil is the most unhealthy" and "soybean oil is the most harmful" How did this statement come from? Is it really unhealthy?
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After reviewing the data, Xiaojiu found that the statement that "soybean oil is unhealthy" originated from a paper published in the endocrinology journal Endocrinology last year, which pointed out that soybean oil will increase the risk of obesity and diabetes, and will also affect nervous system diseases, inducing autism, Alzheimer's disease, depression and so on.
In the experiment, the researchers fed the mice three high-fat diets containing soybean oil, soybean oil with low linoleic acid content, and coconut oil, and found that the mice fed soybean oil produced more than 100 genes that could not function, including genes that produced oxytocin, resulting in a significant decrease in oxytocin levels in the hypothalamus.
One of the lead authors of the paper, Margarita Kulas-Corrazo, an associate professor of neuroscience at the University of California, Riverside, pointed out that the hypothalamus plays an important role in the body's metabolism, playing a role in maintaining body temperature, regulating body weight, etc., and is also crucial for the growth of organisms, the response to stress, and the normal function of the brain.
As soon as the study came out, major media began to follow the trend, and "soybean oil is the most harmful" and "soybean oil is more dangerous than sugar" began to appear in the "love family" group.
Is this really the case?
In fact, after the paper was published, it was questioned and refuted by many scientists, saying that it was creating rumors that "soybean oil is unhealthy" is simply untenable. Xiao Jiu sorted out several points of rebuttal evidence, as follows.
The "famous American doctor" is a liar
The famous American doctor, who claimed that soybean oil was "unhealthy", was famous for his anti-science remarks such as "anti-vaccines" and "anti-wearing masks". He has a website that sells health care products, and has been warned and punished many times by the US FDA and FTC for false propaganda, so his remarks are not credible.
This is a questionable animal experiment
The study has limitations. First of all, the fact that the subjects are mice and not humans does not mean that the same results can be obtained. Second, the study used only male mice and did not study female mice. In addition, the "feeding design" in the experiment is also unreasonable, and there is a suspicion of inducing experiment-oriented and selective presentation of results.
Overall, this is just a questionable animal experiment.
Vegetable oils are not high in trans fats
Any vegetable oil in the process of refining, will produce a small amount of trans fatty acids, and in daily cooking, vegetable oils can produce less trans fatty acids than negligible, according to WHO standards, edible soybean oil does not have to worry about trans fat excess.
Therefore, please remind the family not to rush to throw away the soybean oil. At present, it seems that soybean oil can be eaten with confidence, and the real thing to eat less is actually the following two oils.
<h1 class="pgc-h-arrow-right" data-track="53" > 2 really harmful oils to stay away from</h1>
1. Trans fat
Trans fatty acids, that is, hydrogenated vegetable oils, have low production costs, long shelf life, and are widely used in the food industry, and long-term intake can increase the level of low-density lipoprotein cholesterol (LDL), reduce the level of high-density lipoprotein cholesterol (HDL), and increase the risk of cardiovascular death.
According to statistics, more than 500,000 people around the world die every year from cardiovascular diseases caused by trans fatty acids, common ones such as ghee and margarine. In addition, cakes, biscuits, fries and other foods fried in hydrogenated vegetable oil contain trans fatty acids.
In view of the harm of trans fatty acids, who called on countries to eliminate industrial trans fatty acids, Denmark, Canada and other countries have taken action, there are no relevant regulations in China at present, so we must learn to distinguish. The easiest way is to look at the ingredient information of the food packaging bag, such as "hydrogenated vegetable oil", "cocoa butter", "margarine", "shortening" and other ingredients, should be reduced.
2. Expired edible oil
Many people think that cooking oil will not expire, which is a big mistake. Long-term storage of edible oil is easy to oxidize the oil, rancidity, consumption will cause poisoning, light nausea, vomiting, abdominal pain, diarrhea and other gastrointestinal discomfort reactions, heavy skin bruising, respiratory failure and so on.
So, how do we tell if cooking oil has expired? It can be distinguished from three aspects: color, taste and time.
Look at the color, most of the normal cooking oil is light yellow, if the color of the cooking oil deepens too much, nine times out of ten is sour, should avoid eating;
Taste the taste, take a small amount to taste the taste, if there is an abnormal "Hara smell", it means that it is expired, do not eat;
Looking at the time, the shelf life of general edible oil is 18 months, which refers to unopened. After opening, the cooking oil is constantly in contact with the air, it is easy to deteriorate, it is best to consume it within 2 months, so it is best to buy according to the speed of use.
<h1 class="pgc-h-arrow-right" data-track="54" >3, which oil is a healthy oil? </h1>
This oil is not healthy, that kind of oil is not healthy, some people are confused: what oil to eat to be healthy? At present, the edible oil on the market can be divided into the following categories:
High oleic acid type: olive oil, tea seed oil, rapeseed oil;
High linoleic acid type: soybean oil, corn oil, sunflower oil, wheat germ oil;
Balanced type: peanut oil, rice oil, sesame oil;
High linolenic acid type: flaxseed oil, perilla seed oil, walnut oil;
Saturated type: animal oil, palm oil, coconut oil;
The taste, advantages and disadvantages of different cooking oils are not the same, there is no healthiest oil, which one to use depends on the cooking method. For example:
Soybean oil, corn oil and sunflower oil are recommended for stewing, which are high in unsaturated fatty acids and linoleic acid and less saturated fatty acids;
It is recommended to use peanut oil, rice bran oil and rapeseed oil for frying and frying, which have good heat resistance, high content of monounsaturated fatty acids, and fatty acid balance;
It is recommended to use olive oil, tea seed oil and flaxseed oil for cold mixing, which have high monounsaturated fatty acids and oleic acid content, good heat resistance, and are not easy to solidify at low temperatures.
In fact, no matter what kind of oil, we had better eat it in order to ensure a balanced intake of different fatty acids. At the same time, the daily edible oil intake should be 25-30g, should not be too much or too little, quick to see if you have reached the standard?
Resources:
[1] Studies have found that soybean oil, which we eat every day, may have multiple negative effects on the brain.International Science .2020-03-03
[2] Every meal is inseparable from the cooking oil, how to choose in the end. 2020-12-30
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