I read that carbohydrates need an alkakine environment to be digested while protein and fats need an acidic one, so how can the human stomach handle both at the same time ?

  • 1
    Where did you read that? A link?
    – Jan
    Apr 20, 2018 at 12:47

1 Answer 1


Acidic environment in the stomach (ph ~2) is necessary for the activity of the enzyme pepsin, which partly digests proteins to peptides (NCBI).

"Alkaline environment," which is not really alkaline but rather less acidic or nearly neutral with pH 6-7.4, (PubMed) is in the small intestine, where carbohydrates, fats and peptides are digested.

  • So the "food combining" approach (separating meals of mostly carbs from meals of mostly protein and fats) doesn't really make sense ?
    – mwa1
    Apr 20, 2018 at 15:36
  • 3
    No, from this perspective, I don't see any sense in it. Food combining approach is a known myth.
    – Jan
    Apr 20, 2018 at 15:39
  • 1
    also the "don't drink anything with your meal because you will dilute your stomach acid" is also nonsense, while we're here. Apr 20, 2018 at 16:50

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