Is MSG bad for the body? Why? What are the harms of eating too much?

All kinds of criticism of MSG have been around for a long time, and some even say that a certain country has legislated that it is illegal to eat MSG. These statements have raised doubts in people's minds and seem to have greatly reduced the original freshness of MSG. Believe it, I do find it difficult to give up; If you don't believe it, it's like a fish in your throat, and you can't eat well.

In fact, our country and those countries that are said to be forbidden to eat MSG have never stopped producing MSG, and people have never left MSG almost every day in their lives. So, what is the origin of the various claims about MSG? Let's hear from the experts to get the know.

Monosodium glutamate, whose chemical name is monosodium glutamate, is one of the food additives commonly used to enhance umami when we cook food. China's "Hygienic Standards for the Use of Food Additives" clearly stipulates that monosodium glutamate can be used in food. The safety of monosodium glutamate has been a matter of concern, and there have been many doubts.

As early as 1968, a scientist reported that after eating at a Chinese restaurant near Boston, USA, people experienced specific symptoms of transient symptoms such as numbness from head to upper limbs and general fatigue. These symptoms were suspected to be caused by the addition of a large amount of MSG to the wonton soup, hence the name "Chinese restaurant syndrome". To verify this question, the World Health Organization (WHO) conducted a rigorous examination in 1974 using a double-blind method.

As a result, people who ingested 3 grams of MSG did not notice any symptoms. Other studies have shown that newborn mice were injected subcutaneously with more than 4 grams and grams of monosodium glutamate per kilogram of body weight, respectively, causing lesions in different parts of the brain. However, when monosodium glutamate was added to food or drinking water for mice to eat, the above changes did not occur, and there was no abnormality in the growth and reproduction of mice.

According to a series of experimental results, the WHO clearly stated that monosodium glutamate can be used in appropriate amounts according to the needs of the production process in food, and its allowable daily intake can not be specially stipulated.

Of course, any food (including food additives), even if it is non-toxic, should not be consumed in excess. The use of monosodium glutamate should also have certain restrictions: (1) Generally, the daily intake per person should not exceed 6 grams, too much can increase the content of monosodium glutamate in the blood, causing short-term headache, rapid heartbeat, nausea, dry mouth and other symptoms; (2) Because monosodium glutamate can produce sodium pyroglutamate at 155 and lose umami and produce toxicity, MSG should not be cooked with food for a long time, nor should it be used in frying, frying and baking foods.

The main component of monosodium glutamate is monosodium glutamate, which can be broken down during digestion, which is catalyzed by enzymes in brain tissue and can be converted into an inhibitory neurotransmitter. When excessive intake of MSG, this inhibitory neurotransmitter will inhibit various nerve functions in the human body, resulting in a series of symptoms such as dizziness, headache, drowsiness, and muscle spasms; Some people will also be anxious and flustered; Some people with more sensitive constitutions may even feel sore bones and weak muscles. In addition, too much inhibitory neurotransmitter can also inhibit the secretion of thyroid-releasing hormone by the body's hypothalamus, hindering bone development, especially in children.

If you eat too much MSG, you often feel thirsty, because MSG contains sodium, and excessive intake can lead to high blood pressure. People over the age of 60 are particularly sensitive to sodium intake, so the elderly and people with diseases such as high blood pressure, kidney disease, and edema should especially eat less MSG. When too much monosodium glutamate is consumed, which exceeds the body's metabolic capacity, it will also lead to an increase in the content of glutamate in the blood, limiting the body's utilization of essential minerals such as calcium, magnesium, and copper.

In particular, glutamate can combine with zinc in the blood, resulting in zinc glutamate that cannot be used and excreted from the body, resulting in zinc deficiency in the body. Zinc is an important nutrient for the physical and mental development of infants and young children. Therefore, infants and breastfeeding mothers should fast or reduce MSG.

In addition, Japanese researchers believe that long-term excessive consumption of MSG may lead to thinning of the retina, vision loss, and even blindness. So, how much MSG per meal is appropriate? Researchers recommend that each dish should not exceed milligrams.

The severity of MSG will vary depending on the individual's physique. Therefore, everyone should also pay attention to health when enjoying delicious food.

1. Excessive consumption of monosodium glutamate may cause symptoms such as drowsiness, headache, dizziness, dizziness, and muscle cramps.

2. The main ingredient in monosodium glutamate is monosodium glutamate, which is a good helper for seasoning, but it can also decompose glutamate in consumption, and ostenine is catalyzed in brain cells, which can be converted into a preparation that inhibits nerves, and excessive intake will cause serious harm to the human body. Be sure to mix meals reasonably, avoid eating too much monosodium glutamate, pay attention to light diet and hygiene, and develop good eating habits.