Unsaturated fatty acids are good for health, is the higher the intake, the better? Why?

Of course not, there is a limit to everything. Unsaturated fatty acids are fatty acids that make up body fat and are essential fatty acids for the human body. All healthy individuals need to consume a certain amount of fat in their diet to maintain various body functions.

Long-term intake of large amounts of fat can cause health hazards. In general, healthy adults should consume no more than 30% of their total caloric intake from foods with high fat content. Of this 30%, the calorie intake should not exceed 15% from foods that are higher in saturated fat.

It's not good to eat too much of anything, so according to your own situation, grasp a good degree.

Not too high free radicals also increase.

No, too much is counterproductive.

1. There are different fats.

Unsaturated fatty acids are found in camellia oil, vegetable oil, and fish oil.

Saturated fatty acids are mostly contained in the fats of cattle, sheep, pigs and other animals, and a few plants such as coconut oil, cocoa butter, palm oil, etc. also contain such fatty acids.

2. Chemical structure differences.

The difference between "unsaturated fatty acids" and "saturated fatty acids" is that the former has one or more unsaturated double bonds in the chemical structure, while saturated fatty acids do not have unsaturated double bonds.

3. Stability difference.

Saturated fatty acids are stable and not easily oxidized because they do not have unsaturated bonds; Unsaturated fatty acids, especially polyunsaturated fatty acids, are unstable due to the increase of unsaturated bonds and are easily peroxidized by lipids.

4. Distinguish between health.

Unsaturated fatty acids are better for health.

Unsaturated fatty acids mainly include monounsaturated fatty acids and polyunsaturated fatty acids, both of which have great health benefits. The essential fatty acids required by the human body are polyunsaturated fatty acids, which can be synthesized into DHA (docosahexaenoic acid), EPA (eicosapentaenoic acid), and AA (arachidonic acid).

They have the effects of lowering blood lipids, improving blood circulation, inhibiting platelet aggregation, inhibiting atherosclerotic plaques and thrombosis in the body, and have a good prevention and treatment effect on cardiovascular and cerebrovascular diseases.

DHA can also improve children's learning skills and enhance memory. Monounsaturated fatty acids can reduce blood cholesterol, triglycerides, and low-density lipoprotein cholesterol (LDL-C). Although unsaturated fatty acids have many benefits, they are prone to lipid peroxidation, resulting in free radicals and reactive oxygen species, which can cause certain damage to cells and tissues.

High intake of saturated fatty acids is the main cause of elevated blood cholesterol, triacylglycerol and LDL-C, which secondary to arterial lumen narrowing, atherosclerosis, and increased risk of coronary heart disease.

Categories: Medical & Health >> Common sense of the human body.

Problem description: Biochemistry definition! Thank you.

Analysis: More unsaturated fatty acids are not always better.

Unsaturated fatty acids can be divided into monounsaturated fatty acids (MUFA) and polyunsaturated fatty acids (PUFA) If dietary saturated fatty acids are replaced with rich monounsaturated fatty acids, the serum total cholesterol and low-density lipoprotein-cholesterol (LDL-C) levels can be reduced, but there is no significant change in high-density lipoprotein-cholesterol (HDL-C). The disadvantage of MUFA is that it is rich in calories, so eating too much can increase total calories and increase body weight.

Polyunsaturated fatty acids are divided into two categories:

Linoleic acid (octadecadienoic acid) is referred to as -6 category, which is an essential fatty acid, mainly found in vegetable oil, and the content is more sunflower oil, soybean oil, sesame oil, etc. Linoleic acid can reduce blood lipid levels, and if it can partially replace saturated fatty acids in the diet to change the dietary structure, it can reduce serum total cholesterol and LDL-cholesterol triacylglycerol levels. Feeding large amounts of linoleic acid can cause gallstones and alter cell membrane composition, potentially causing chemical carcinogenesis and even destroying the immune system.

Studies have concluded that dietary polyunsaturated fatty acids are safe and beneficial if they do not exceed 10% of total calories.

Linoleic acid (octadecotrienoic acid) is referred to as -3 class, linolenic acid polyunsaturated fatty acids in food are mainly ** oil-rich fish (fish oil, fish offal), fish oil mainly contains eicosapentaenoic acid (DHA), vegetable oil contains very little -3 class, and linoleic acid (class 6) rich in vegetable oil cannot be converted into eicosapentaenoic acid or docosahexaenoic acid in the body. High intake of -3 polyunsaturated fatty acids inhibits the synthesis of very low-density lipoprotein cholesterol (VLDL-C) and triacylglycerol, thereby decreasing serum triacylglycerol and increasing HDL-cholesterol levels. Serum total cholesterol is reduced by lowering very low-density lipoprotein-cholesterol, so class -3 cholesterol-lowering is not as effective as other red-polyunsaturated fatty acids and may increase LDL-cholesterol levels.

3 It is also a high-calorie nutrient, eating too much will lead to overweight, obesity, if the human body can not produce enough lipenzymatic to promote its hydrolysis and absorption, it will also cause indigestion, nausea and other reactions. Class 3 is highly susceptible to oxidation and poses a risk of lipid superoxidation, so it is not advisable to add too much of these unsaturated fatty acids to the diet.

Preamble: All animal oils are unsaturated fatty acids, which are essential fatty acids for the human body, and fatty acids are also divided into many kinds, which can be supplemented from the diet at ordinary times. It can reduce blood cholesterol, improve blood circulation, prevent arteriosclerosis and other diseases, and improve memory and thinking skills.

If there is a lack of unsaturated fatty acids in the human body, the body's functions will also change, the immune system will be abnormal, the endocrine system will also be abnormal, including cardiovascular and cerebrovascular disorders, at this time, it is easy to suffer from hyperlipidemia, thrombosis, hypertension, arteriosclerosis, diabetes, rheumatism and other diseases, and will accelerate the aging of the body. Generally, most foods will contain unsaturated fatty acids, but unsaturated fatty acids are generally animal fat oils and vegetable oils, and fatty acids are also divided into monounsaturated fatty acids and polyunsaturated fatty acids, which cannot be synthesized in the human body, so they must be supplemented in time from the diet.

There are a lot of nutrients needed by the human body, including unsaturated fatty acids, many people think that fat will cause obesity, and there will be great resistance to fat, but fat is also a necessary substance in the human body, if there is a lack of fat, it will affect human health. If you want to supplement unsaturated fatty acids through the diet, you can eat more avocados in moderation, avocados are high-fat and low-sugar fruits, containing a lot of fat, generally unsaturated fatty acids, which can not only supplement the nutrients needed by the body but also avoid overnutrition, and avocados are rich in dietary fiber, which can promote gastrointestinal peristalsis and can be well digested and absorbed.

Usually you can also eat some nuts in moderation, because nuts also contain a lot of fatty acids, walnuts and cashew nuts in the fatty acid content is the highest, can be a good supplement of fatty acids, but also conducive to the body's regulation, generally a lot of tofu also contains unsaturated fatty acids and dietary fiber and plant protein, can supplement the human body needs a variety of nutrients, can be well absorbed and digested by the human body.

Unsaturated fatty acids refer to a type of fatty acid that is not saturated. This unsaturated fatty acid has great benefits for the body, being able to promote the functioning of metabolism and is good for the body. It can be seen from the ingredients in the food.

It refers to a nutrient, which is one or more molecules in fatty acids, which is a kind of fat that the human body needs, which can promote blood circulation, can supplement iron, calcium can protect the effect, and can control the content of cholesterol, which can be judged according to the ingredient list.

It is a substance that constitutes fat, extracted from general food, which can increase people's appetite, improve the body's immunity, and protect the cell membrane well.

Unsaturated fatty acids are divided into -3 series and -6 series of unsaturated fatty acids according to the position of double bonds, and then they are divided into monounsaturated fatty acids and polyunsaturated fats according to the number of double bonds.

Categories: Life.

Analysis: Unsaturated fatty acids refer to fatty acids that contain at least one carbon-carbon double bond in their molecular structure [CH3(CH2)NCOOH]. Because it contains unstable carbon-carbon double bonds, it is easy to react with most substances, so it is called "unsaturated" fatty acids.

There are two fatty acids that must survive in human life, one is saturated fatty acids. (It is not only the meat we usually eat, chicken, duck, fish and other fats, but also the calories, which are saturated fatty acids.) The other is unsaturated fatty acids.

Unsaturated fatty acids are used to adjust various functions of the human body and eliminate excess "garbage" in the human body, that is, excess fat is formed due to excessive intake of saturated fatty acids. If the human body lacks unsaturated fatty acids, then all aspects of the human body will produce a series of changes. First of all, the prostaglandin PGE1-PGE3 cannot be synthesized, which will cause inflammation of the prostate.

In addition, immune, cardiovascular and cerebrovascular, reproductive, endocrine and other systems will be abnormal and disordered. As a result, it causes a series of diseases such as hyperlipidemia, hypertension, thrombosis, atherosclerosis, rheumatism, diabetes, roughness, and accelerated aging. Therefore, the human body cannot lack unsaturated fatty acids.

In life, many of us have inexplicably suffered from these diseases, and we have not been able to find the first one, and the root cause is the lack of unsaturated fatty acids in our human body.

Due to the rapid development of society and the gradual improvement of life, our food structure has also undergone great changes, and the intake of saturated fatty acids is excessive. (i.e., meat, high protein, etc.), the nutritional imbalance caused by the fine dietary structure makes our blood viscosity thicker, which causes a series of lesions such as myocardial infarction and cerebral hemorrhage. Cardiovascular and cerebrovascular diseases have become the number one "killer" of middle-aged and elderly people in China.

Once you get these diseases, you will spend a lot of money on them** and it will be long-term. (According to a survey by sociologists, on average, 7 out of 10 poor families are impoverished because a member of the family has a disease.) And it is mostly cardiovascular and cerebrovascular diseases.

It can be seen that cardiovascular and cerebrovascular diseases have become more and more threatening to our lives. And it is killing our bodies day by day. And we are unconsciously approaching death.

When you find out, it's too late to regret it.

Medical scientists have also studied a large number of lipid-lowering and antihypertensive drugs, but they are all palliative, not curative, and must be taken at any time, and they have a corresponding adverse effect on the human body when they are taken. and cause other lesions. Could there be a better way?

After years of research, foreign medical scientists and pharmacologists unanimously believe that linolenic acid is the best lipid-lowering and antihypertensive product in the world today. However, its bioactive content must reach more than 15% in order to have a significant pharmacological effect.

Fan Wenguang, director of the Nutritional Food Appraisal Committee of the Chinese Nutrition Association, said: - Linolenic acid is more effective than general prevention drugs in reducing blood lipids and reducing cardiovascular and cerebrovascular morbidity, and the general effect can be 5 times higher.