https://en.wikipedia.org/wiki/Leaky_gut_syndrome Thank you, I'd not read it was a myth before and had confused it with another condition 'worsening allergy symptoms due to the effects of alcohol'.

Sorry, I couldn't find a good link to describe the effect but did see numerous websites mentioning that alcohol can worsen allergy symptoms.

My allergist informed me that alcohol dilates the blood vessels allowing more allergens to pass thru. My anecdotal evidence is that I do seem to suffer from more food allergies when I drink alcohol. Foods that I have a mild allergy to become seem to be more problematic when I drink.