Diet and health experts say the people most likely behind the surge in popularity are those most at risk
A woman eating fermented food at home
A warning has been issued by experts regarding a fashionable food that has seen sales skyrocket by nearly 50% due to its touted health benefits. Fermented foods like kimchi, artisan cheese and kefir, have become increasingly popular due to their alleged benefits for gut health, which include improved weight management and heart health.
However, these foods, rich in beneficial bacteria, may not be suitable for everyone. A recent study conducted by Ohio State University revealed that some fermented foods contain antibiotic-resistant bacteria, which can lead to vomiting, diarrhoea, or even sepsis.
One such food was found to contain a strain of Weissella, associated with infections of the heart lining and bones, and potentially fatal outcomes. Given that fermented foods are believed to boost the immune system, those who consume them could already be unwell, elderly, or vulnerable, making them more susceptible to these bacteria.
Bahee Van de Bor, a dietitian and spokesperson for the British Dietetic Association, advised MailOnline: “In this scenario it’s safer to take supplements of specific strains of probiotics to restore gut health.” She further cautioned: “Some fermented foods, such as aged cheese and fermented soy foods, are high in histamine, which can trigger symptoms including headache, rashes and digestive problems for people with histamine intolerance.”
This group comprises up to three per cent of the UK population. Dr Manal Mohammed, a senior lecturer in medical microbiology at the University of Westminster, warned: “Some people might experience severe bloating, which can be very painful.”
She advised that those with weakened immune systems, pregnant women, infants and individuals with digestive disorders should steer clear of fermented foods. Meanwhile, Ms Van de Bor commented: “Fermented foods have recently become very trendy – but at the end of the day there is stronger evidence of health benefits from eating your five-a-day, wholegrains and pulses rather than having loads of kimchi.”
