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

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Fermented foods have become very popular, thanks to claims about their nutritional properties and reported health benefits, such as improving digestion, boosting immunity and even helping people fall back weight. Some of the most popular fermented foods include kefir, kombucha, sauerkraut, tempeh, natto, miso, kimchi and sourdough boodle .
But though these fermented foods might offer us many health perks, most people aren ’ triiodothyronine aware that they might not work for everyone. For some people, fermented foods might cause good health issues .
Fermented foods are loaded with microorganisms, such as live bacteria and yeast ( known as probiotics ). however, not all microorganisms are bad. many, like probiotics, are harmless and are even beneficial to us .
During the process of agitation, probiotics convert carbohydrates ( starch and sugar ) into alcohol and/or acids. These act as a natural preservative and give fermented foods their classifiable zest and spirit. many factors affect zymosis, including the type of probiotic, the primary metabolites these microbes produce ( such as lactic acid, or sealed amino acids ), and the food undergo zymosis. For example, probiotic yogurt is produced by fermenting milk, most normally with lactic acid bacteria that produce lactic acerb.

Fermented foods contain high amounts of probiotics, which are by and large considered safe for the majority of people. In fact, they ’ ve been shown to have anti-oxidant, anti-microbial, anti-fungal, anti-inflammatory, anti-diabetic and anti-atherosclerotic natural process. however, some people might experience severe side effects after consuming fermented foods .

1. Bloating

The most coarse reaction to fermented foods is a irregular increase in natural gas and bloat. This is the result of overindulgence gas being produced after probiotics kill harmful gut bacteria and fungi. Probiotics secrete antimicrobial peptides that kill harmful infective organisms like Salmonella and E. Coli .
A late study showed this disinfectant effect of probiotic Lactobacilli strains found in commercial yogurt. Although bloat after eating probiotics seems to be a commodity gestural that the harmful bacteria are being removed from the intestine, some people might experience dangerous bloat, which can be identical atrocious .
Drinking besides much kombucha can besides lead to excess boodle and calorie intake, which may besides lead to bloating and accelerator .

2. Headaches and migraines

Fermented foods rich in probiotics – including yogurt, sauerkraut and kimchi – naturally contain biogenic amines produced [ during agitation ]. Amines are created by certain bacteria to break down the amino acids in ferment foods. The most common ones found in probiotic-rich foods include histamine and tyramine .
Some people are sensible to histamine and other amines, and may experience headaches after eating fermented foods. Because amines stimulate the cardinal aflutter arrangement, they can increase or decrease lineage stream, which can trigger headaches and migraines. One discipline found that low-histamine diets reduced headaches in 75 % of participants. Taking a probiotic supplement might be therefore prefer .

3. Histamine intolerance

Histamine is ample in ferment foods. For most, our body ’ south specific enzymes will naturally digest them. however, some people don ’ deoxythymidine monophosphate produce enough of these enzymes. This means histamine won ’ triiodothyronine be digested and will rather be absorbed into the bloodstream .
This can cause a range of histamine intolerance symptoms. The most common are itching, headaches or migraines, runny scent ( rhinitis ), eye inflammation, tire, hives and digestive symptoms include diarrhea, nausea and vomit .
however, histamine intolerance can besides cause more austere symptoms, including asthma, low blood press, irregular heart rate, circulatory collapse, sudden psychological changes ( such as anxiety, aggressiveness, dizziness and lack of concentration ) and sleep disorders .

4. Food-borne illness

While most fermented foods are dependable, it ’ s still possible for them to get contaminated with bacteria that can cause illness. In 2012, there was an outbreak of 89 cases of Salmonella in the US because of unpasteurized tempeh.

Two big outbreaks of Escherichia coli, were reported in south korean schools in 2013 and 2014. They were associated with eat contaminated fermented vegetable kimchi .
In most cases, probiotics found in fermented milk products such as cheese, yogurt and buttermilk can effectively prevent the increase of certain bacteria, such as Staphylococcus aureus and Staphylococcal enterotoxins which can cause food poison. But in some cases probiotics fail and bacteria can actually secrete toxins, so the product may be hazardous .

5. Infection from probiotics

Probiotics are generally safe for the huge majority of people. however, in rare cases, they can cause contagion – particularly in people who have a compromised immune system .
A London study reported the first case of a 65-year-old diabetic affected role whose liver-colored abscess had been caused by probiotic consumption. susceptible patients, such as those with compromise immunity, should be advised against consuming besides many probiotics .
discussion with probiotics can cause serious infections, such as pneumonia in vulnerable people and systemic infections, including sepsis and endocarditis .

6. Antibiotic resistance

probiotic bacteria can carry genes that confer resistance to antibiotics. These antibiotic resistor genes may pass to other bacteria found in the food chain and gastrointestinal tract via horizontal gene transfer. The most common antibiotic resistance genes carried by fermented foods are against erythromycin and tetracycline, which are used to treat respiratory infections and some sexually transmitted diseases .
Researchers found resistant probiotic strains in commercially available dietary supplements, which could mean electric resistance to several common types of antibiotics used to treat serious bacterial infections .

Read more:
Antibiotic resistance: researchers have directly proven that bacteria can change shape inside humans to avoid antibiotics

inquiry has besides found six probiotic Bacillus strains found in food products ( including kimchi, yogurt and olives ) are besides tolerant to respective antibiotics .
And, a recent malaysian study showed probiotic Lactobacilli bacteria in kefir carry resistance to numerous antibiotics, including ampicillin, penicillin and tetracycline. These are used to treat dangerous human diseases including bladder infections, pneumonia, gonorrhea, and meningitis .
Another study besides showed lactic acid bacteria found in Turkish dairy products were tolerant chiefly to vancomycin antibiotic, which is the drug of choice for treatment of MRSA infection.

While there are a wide-eyed variety show of health benefits that can happen from consuming fermented foods, these may not work for everyone. While most people will be fine eating fermented foods, for some they could cause serious health problems .
More on evidence-based articles about diets :
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Category : KOREAN FOOD

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