> Granted, the amounts we ate were small, but that is generally
> true of vinegar consumption anyway.  And the body does have a
> metabolic pathway for dealing with vinegar.

The body has a metabolic pathway for dealing with alcohol, but I wouldn't
advise drinking it in any quantity on a regular basis. Based on my
understanding of the seasonal availability of fruits in the Upper
Paleolithic/Pleistocene, it seems unnatural for humans to consume rotten
fruit products with any regularity. But as I said, infrequent consumption of
moderate amounts of vinegar would seem to be harmless.

> I would be very interested, however, to learn of any research
> that shows that vinegar has a deleterious effect on the immune
> system.

Cordain mentioned vinegar as a source of potential problems, but he didn't
elaborate. I'll try to talk to him about it again.

Troy