>
> .....Given that his symptoms are delayed and so minor - just diarrhea and
> possibly mild behavioural changes - we're wondering if this is just
> intolerance.  Does anyone know of a good book that I could read that
> describes intolerance as opposed to allergy?
>
> If anyone has any experience with intolerance that they would like to
> share, I would like to hear from you.
>
> Personally, I think the distinction between allergy and intolerance is a gray area, and perhaps a moot point. But, a person with neurological symptoms, in my humble opinion, is probably allergic. People have varying degrees of sensitivity (allergy and intolerance), or at least varying levels of threshold where symptoms are noticed. Reactivity usually declines after signifigant periods of abstinence, and a bigger dose, or an accumulative dose, is necessary before symptoms appear. Sometimes another stressor is the trigger in the presence of the allergen.

Also, casein is the most common allergic protein in dairy. Many people
react to casein, but not to whey (which contains no casein). Whey is
made of the other protein factions of milk, lactoalbumin and
lactoglobulin.

Daniel A. Twogood, D.C.