Editing Food intolerance (section)

==Pathogenesis==
{{Expand section|date=January 2009}}
Food intolerance are all other adverse reactions to food. Subgroups include enzymatic (e.g. lactose intolerance due to lactase deficiency), pharmacological (e.g. reactions against biogenic amines, [[histamine intolerance]]), and undefined food intolerance (e.g. against some food additives).<ref name="pmid19340768">{{cite journal |author=Wüthrich B |title=[Food allergy, food intolerance or functional disorder?] |language=de |journal=Praxis |volume=98 |issue=7 |pages=375–87 |date=April 2009 |pmid=19340768 |doi=10.1024/1661-8157.98.7.375 }}</ref>

Food intolerances can be caused by enzymatic defects in the digestive system, can also result from pharmacological effects of vasoactive amines present in foods (e.g. histamine),<ref name="pmid16782524" /> among other metabolic, pharmacological and digestive abnormalities.

Allergies and intolerances to a food group may coexist with separate pathologies; for example, cow's [[milk allergy]] (CMA) and lactose intolerance are two distinct pathologies.