Is a food preservative a factor in insulin resistance?

More research needs to be done on the effects of proprionate in humans, researchers say
Reuters Health
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The widely used food preservative propionate may impair the action of insulin, according to US and Israeli researchers who have conducted a small study in humans and animals.

The short-chain fatty acid propionate, also known as proprionic acid, has potent anti-mould effects, and is generally recognised as being safe. It is endogenously produced by gut microbiota, the researchers say.