<<Disclaimer: Verify this information before applying it to your situation.>>

Here's the simplest explanation that I received:

> Imagine a pair of fishnet stocking, size XS, on an XL lady...Same number of
> hole, just much bigger than they should be.  Lining of gut is supposed to
act
> as a barrier to keep large proteins--bacteria, viruses, and undigest food
from
> passing into the bloodsteam.  If the gut is damaged or inflammed, it can't
> do this effectively.  When food proteins pass into the blood, secondary food
> allergies/sensitivities can develop.
>
> There are tests for intestinal permeability--find info at
> http://www.celiac.com/treat.html#test_kit
>
> Bev in Milwaukee