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Causes of Lactose Intolerance

List of causes of Lactose Intolerance

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

Common Causes of Lactose Intolerance

Following is a list of common causes of Lactose Intolerance:

Other Causes of Lactose Intolerance

Following is a list of other causes of Lactose Intolerance:

Lactose Intolerance Causes: Risk Factors

The following conditions have been cited in various sources as potentially causal risk factors related to Lactose Intolerance:

Race Patterns for Lactose Intolerance Causes:

Racial Information for Lactose Intolerance: While this condition is least common among Caucasians (about 15% of adults), it is widespread among other... (Source: excerpt from Lactose Intolerance: NWHIC) ...more »

Lactose Intolerance: Related Medical Conditions

To research the causes of Lactose Intolerance, consider researching the causes of these these diseases that may be similar, or associated with Lactose Intolerance:

Lactose Intolerance: Causes and Types

Causes of Broader Categories of Lactose Intolerance: Review the causal information about the various more general categories of medical conditions:

Lactose Intolerance as a symptom:

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:

What causes Lactose Intolerance?

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)

Related information on causes of Lactose Intolerance:

As with all medical conditions, there may be many causal factors. Further relevant information on causes of Lactose Intolerance may be found in:


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