What is the danger of fermented foods that should be healthy to harm the human body?


What is the danger of fermented foods that should be healthy to harm the human body?

by Timolina

Our table is lined with traditional Japanese fermented foods such as miso and natto, as well as various fermented foods such as kimchi and yogurt. These fermented foods are expected to be healthy food because they can be expected to improve digestion and absorption, improve immunity, etc., but it has been pointed out that in some cases the health may be impaired.

Kombucha, kimchi and yogurt: how fermented foods could be harmful to your health

Many fermented foods contain useful microorganisms (Probiotics) Nutrients such as vitamins are synthesized and harmful substances are removed during the fermentation process.Food with many health benefitsIt is said that. Some of these foods areKefir・ It is called kombucha overseasBlack tea mushroomsSauerkrautTempe・ Natto ・ Miso ・ Kimchi ・Sourdough breadAnd so on. However, in some cases, it has been found that the following six health hazards and side effects may occur.

◆ 1: Excessive abdominal fullness

If you eat fermented foods, even healthy people may get stuffy. This is due to the excessive production of gas as a result of the activity of probiotics in fermented food in the intestines. Probiotic activity in the gutReduces harmful bacteriaTherefore, it is basically a good thing, but depending on the person, a large amount of gas may make the stomach pain more serious.

◆ 2 : Headache

Occurs in yogurt, sauerkraut, kimchi, etc. as a result of probiotics breaking down proteinsBiogenic amineis included. These amines act on the nervous system and cause increased blood pressure and headaches.(PDF file)reportAlso states that the toxicity of amines is clear.

by Rido81

◆ 3: Histamine intolerance

Among the aforementioned amines,histamineIs a substance that is particularly likely to cause allergic diseases and food poisoning, and ingesting large amounts can cause symptoms such as itching, headache or migraine, runny nose (rhinitis), redness of eyes, fatigue, hives, diarrhea, nausea and vomiting. . Many people have enzymes that metabolize histamine, but they do not have enzymesHistamine intoleranceIn addition to the above symptoms, such people have asthma, hypotension, arrhythmia,Circulatory failure・ You may experience sudden psychological symptoms (anxiety, aggression, dizziness, reduced concentration, etc.) and sleep problems. Because histamine is contained not only in fermented foods but also in fish that have fallen in freshness, people who say that they have eaten fish dishes with other people and have developed urticaria on their own are not resistant to histamine. There may be a trend.

◆ 4: Food poisoning

Organic acids and alcohols produced by probiotics during the fermentation process act as natural preservatives and prevent the growth of harmful microorganisms. However, depending on the production process and storage conditions, harmful microorganisms may enter and cause food poisoning. For example, in the United States due to tempeh that was not pasteurized in 2012<a href = " 0A "target =" _ blank "> Food poisoning occursAnd a total of 89 peopleSalmonellaInfected with Also, in Korea, large-scale food poisoning caused by kimchi contaminated with E. coli in school meals,Sequential outbreaks in 2013 and 2014doing.

◆ 5 : Probiotic symptoms

The above food poisoning is caused by harmful microorganisms mixed in fermented foods, but there are also cases where probiotics are the direct cause. For example, in a study conducted in 2017, 65-year-old diabetics have bacteria in their blood due to lactic acid bacteria.BacteremiaAnd urine in the liverLiver abscessIt was reported that Therefore, if you are pregnant or breastfeeding, or if your immune system has declined due to age or disease,Avoid fermented foodsIt is suggested that.

by DmytroMykhailov

◆ 6: Occurrence of drug-resistant bacteria

Genes are not only inherited from mother cells to daughter cells, but “gene uptake” occurs between individuals and between other organisms. This phenomenonHorizontal gene transferIt is called. Six types of probiotics in fermented foods have antibiotic resistanceResearch in June 2019However, when horizontal gene transmission occurs, there is a risk that antibiotic resistance is inherited from probiotics to harmful microorganisms.

From these cases, Manal Mohammed, who studies medical microbiology at the University of Westminster, said, “Eating fermented foods has many benefits, but not everyone can benefit. People can eat fermented foods, but some suffer serious health problems. "

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