Following is a list of causes or underlying conditions (see also Misdiagnosis of underlying causes of Lactose Intolerance) that could possibly cause Lactose Intolerance includes:
More causes: see full list of causes for Lactose intolerance
Following is a list of common causes of Lactose Intolerance:
Following is a list of other causes of Lactose Intolerance:
Conditions listing Lactose Intolerance as a symptom may also be potential underlying causes of Lactose Intolerance. Our database lists the following as having Lactose Intolerance as a symptom of that condition:
Causes: Lactose Intolerance:
cannot digest lactose because you do not have enough lactase enzyme. The
small intestine needs lactase enzyme to break down lactose. If lactose is
not digested, it can cause gas and stomach cramps.
(Source: excerpt from Why Does Milk Bother Me: NIDDK)
Article excerpts about the
causes of Lactose Intolerance:
In most cases, lactose intolerance develops slowly over time. In many
people, the body begins to produce less lactase beginning around two years
old. As these people become older, they lose the ability to produce
lactase, but symptoms of lactose intolerance may not appear until well
after childhood. No one knows why this occurs. In other cases, certain
digestive diseases or injuries to the small intestine can cause lactose
intolerance. Both can reduce the amount of lactase produced by the lining
of the small intestine. Another very rare cause is being born without the
ability to produce lactase. (Source: excerpt from Lactose Intolerance: NWHIC)
As with all medical conditions, there may be many causal factors. Further relevant information on causes of Lactose Intolerance may be found in:
16 MEDICAL BOOKS ONLINE! Review excerpts from medical books online, free, without registration, for more information about the causes of Lactose Intolerance.
Predisposing factors include:
Source: The 5-Minute Pediatric Consult, 2008
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