Milk Consumption on Digestive Comfort.

Plain-language summary

Lactose, naturally present in milk, can cause digestive discomfort. Delactosed milk is currently the only one alternative to cow's milk for intolerant people. As some of them do not digest milk, it was completely remove from their diet. However, are they really intolerant to lactose or intolerant to milk (or to another of its compounds)? Do β-caseins play a role in this intolerance? β-caseins are proteins naturally present in milk. Two types of β-caseins were identified: A1 and A2. These types differ according to the genetic profile of the cow and depend on the breed. The rare clinical studies interested in this topic suggest that: 1. consumption of milk A1 versus consumption of milk A2 can lead to: softer stools, delayed transit, as well as pro-inflammatory effects in some individuals, 2. consumption of A2 milk significantly reduces gastrointestinal symptoms and improves digestive comfort in lactose intolerant people. Thus, it would be interesting to be able to assess the effect of a consumption of A2A2 milk type compared to A1A2 milk type, both on the parameters of digestive comfort and on inflammatory parameters.

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