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Tea News for the week ending February 23, 2024
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Researchers Link Diets that Include Tea Brewed in Teabags to High Levels of “Forever Chemicals”
Researchers studying dietary patterns report a link between consuming tea in teabags and high levels of forever chemicals likely leeched from tea bags and packaging. The study was financed by the US National Institutes of Health (NIH) and was led by chemists at the Keck School of Medicine at the University of Southern California (USC)
According to researchers, dietary changes could lower pre- and polyfluoroalkyl (PFAS) levels in the body based on testing that showed increased levels in human trials among those consuming certain foods and beverages. The research is based on a nationally representative sample of 725 young adults.
The PFAS levels were highest in those who ate out frequently and those who drank tea in teabags and consumed processed foods. Eating food at home demonstrated the opposite. Every 200-gram increase in home-prepared food showed lower levels of PFOS (perfluorooctanesulfonic acid), one of several forever chemicals.
A single additional serving of tea was linked to 24.8% higher levels of perfluoro- hexanesulphonic acid (PFHxS), 16.17% higher perfluoroheptanesulfonic acid (PFHpS), and 12.6% higher levels of perfluorononanoic acid (PFNA).
Totals also rose among those who consumed pork, hot dogs, and processed meats.
Researchers expressed concern that even metabolically healthy foods such as tea can be contaminated with PFAS, which is known to harm human health.
Hailey Hampson, a PhD candidate at the University of Southern California, told Technology Networks, “Our primary hypothesis is based on a study published last year, which found that some tea bags contain PFAS. This study, conducted in India, tested 108 tea bag samples collected from the Indian market and found that 90% contained detectable PFAS concentrations.”
The research team is now testing popular tea brands in a follow-up study.