Flax is a crop developed and utilized by human beings thousands of years ago. It is widely planted all over the world, and it doesn't need much chemical fertilizer and pesticide. Its use can not only extract oil, but also make healthy food from seeds.
In recent years, linseed oil has become the new favorite of edible oil. Merchants call it slimming oil and moonlight oil, and claim to have the effect of treating constipation and lowering cholesterol. Does linseed oil really have these health miracles?
What Xiaomei wants to say is that there is only a moderately healthy diet, and there is no ultimate healthy food. Never eat flaxseed oil indiscriminately!
Linseed oil, which is often eaten. Also known as sesame oil, as the name implies, is an edible oil squeezed from flax (also known as flax) seeds.
According to the different ways of oil production, there are three ways: cold pressing, hot pressing and leaching. Among them, flaxseed oil produced by high pressure pressing without heating has the highest nutritional value. According to its characteristics, cold food is the best, others can be served with various soups and drinks, and can also be cooked at low temperature.
When we hear experts say that a substance necessary for human body can't be synthesized by itself and needs to be supplemented by external diet, it shows that it is very important and our body must be indispensable, but on the other hand, we can also change our thinking: if a substance can't be synthesized by human body, it means that it belongs to trace substances and you need to be supplemented, but too much makeup can also cause physical problems, so-called too much. That's right.
1. A spoonful of linseed oil in the morning and evening will only make you fatter and fatter.
At present, there is no research on flaxseed oil to lose weight, but merchants promote flaxseed oil as a magical slimming oil, so this is just a selling point planned by merchants for sales reasons, and most of the planned selling points are flaxseed.
Soluble dietary fiber rich in flaxseed can delay gastric emptying and affect intestinal absorption.
Animal experiments show that adding 10% flaxseed to diet can increase leptin level, suppress appetite and reduce fat synthesis, which is the theoretical basis of flaxseed weight loss.
But in theory, flaxseed is good for losing weight. It doesn't mean that linseed oil is really good for losing weight. .
If you really drink a spoonful of linseed oil in the morning and evening as suggested by the merchants, you will consume about 180 calories, which is equivalent to two-thirds of steamed bread (about 80g steamed bread made of 50g flour) or two-thirds of rice (1130g rice made of 50g rice). Drinking like this every day will not only lose weight, but also gain weight.
2. Children are smarter: eat fish instead of linseed oil.
Flaxseed oil is rich in α -linolenic acid, with the content ranging from 39.90% to 60.42%. It can synthesize DHA (commonly known as brain gold) which is beneficial to brain development in the body.
Just as the human body has no ability to synthesize α -linolenic acid, all α -linolenic acid can only be obtained through food, so children who eat linseed oil are smarter. Statement.
Considering that the brain development of the fetus starts from the 20th week of pregnancy, merchants will encourage pregnant women to eat more linseed oil.
However, the ideal is very substantial, but the reality is very skinny. After all, the ratio of a- linolenic acid to DHA in the body is only about 9%, so it is more efficient to supplement DHA-rich fish directly to pregnant women.
In addition, linseed oil will have a slight impact on hormone levels, and the National Institutes of Health recommends not to eat linseed oil during pregnancy.
Therefore, it is wise to eat fish during pregnancy, but choose anchovies, yellow croaker, sea bass, catfish, cod, crab, lobster, herring, oyster, mackerel, freshwater bass, barracuda, flounder, salmon, sardines, scallops, shad, tilapia and fresh water.
3. Constipation: Eating vegetables is better than eating linseed oil.
There are three reasons for popularizing linseed oil to improve constipation:
First, flaxseed is rich in dietary fiber, which can improve constipation, and the oil made of flaxseed also has a certain laxative effect.
Flaxseed is indeed rich in dietary fiber. 10g flaxseed can provide 1g water-soluble dietary fiber and 3g insoluble dietary fiber. These dietary fibers can increase the amount of stool, so eating flaxseed may improve constipation, but there are few related studies.
In addition, dietary fiber was completely removed in the process of preparing linseed oil from linseed. If linseed oil can improve constipation, it is definitely not because of dietary fiber.
In addition, to obtain dietary fiber, eat more vegetables. It is recommended to eat 1 kg of vegetables every day.
Second, the oiliness of linseed oil can relieve constipation.
In that case, there is absolutely no need to eat linseed oil. Why? The data shows that the daily average oil intake of Chinese residents is 42. 1g, which has exceeded the standard.
Third, flaxseed oil is rich in magnesium, which helps intestinal peristalsis.
Only by eating 1 00g of flaxseed oil can you get1mg of magnesium. Manufacturers should not be willful to this extent.
4. Lowering blood fat: Flaxseed oil is useless, and flaxseed is better.
A meta-analysis of 28 studies in 2009 showed that:
Although eating linseed oil can slightly reduce total cholesterol and bad cholesterol, unfortunately, compared with the control group, the degree of reduction is not significant.
However, it is gratifying that eating flaxseed can significantly reduce total cholesterol and bad cholesterol, but flaxseed should be cooked, because raw flaxseed contains cyanogenic glycoside, which is easy to cause poisoning.
Although linseed oil has no magical effect of preventing and treating obesity, constipation, lowering blood fat and making children smarter, it is also suggested to replace some edible oils such as peanut oil, corn oil and rapeseed oil with linseed oil to make fatty acid intake more balanced. If you think your usual food is greasy, you can season it with linseed oil.