Food additives

Two of the 15 most common emulsifiers — carboxymethylcellulose and polysorbate 80 — that bind the oily and watery components of processed foods can alter the gut microbiome and reduce the barrier layer of mucus between immune cells and bacteria, according to a mouse study published on 25 February in Nature.

As a result, mice that consumed the emulsifiers were more prone to a range of symptoms that are hallmarks of inflammatory disease and metabolic syndrome, researchers at Georgia State University and Cornell reported. Emulsifiers are common in ice-cream, salad dressing and many other packaged foods, but it is not yet known how they may affect the human gut. “When it comes to people making their own decisions, between our studies and others out there,it&’s better to eat less processed food,” said study co-author Andrew Gewirtz of Georgia State.

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