In animal studies, emulsifiers in processed foods have been shown to alter the microbiome (the community of microorganisms in the body), increase blood sugar, cause excessive hunger, increase weight and damage the liver, the study authors said.
Regrettably it did not specify which emulsifiers. Hopefully it's just processed ones like soy lecithin. But does that include things like honey or maple syrup, which will nicely emulsify vinaigrette? It doesn't say. >_<