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- Last Updated on Monday, 25 October 2021 16:53
Lactose Intolerance: Prevalence, Symptoms, Treatment
Dairy Intolerance, Lactase Deficiency, Milk Intolerance
Lactose intolerance is defined as "the inability to digest the milk sugar lactose" - due to a deficiency of the enzyme lactase. We start out as infants being able to digest lactose. But by weaning ~ 2 years of age most people lose the ability, that is - we no longer produce the enzyme lactase.
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- Lactose then becomes a food toxin: something which contributes to damage in the small intestine - fostering the development of disease.
- Milk protein, casein also damages the small intestine, see casein allergy.
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Prevalence of lactose intolerance worldwide is 75% - or three in four people. In certain ethnic groups it's even higher*: NIDDK states up to 90% of African Americans. Most sufferers are unaware - leaving them vulnerable to illnesses like malabsorption, autoimmune disorders and mental illness.
*Swagerty D. et al. Am Fam Physician https://pubmed.ncbi.nlm.nih.gov/12018807/
Video: Testing for Food Intolerance
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