Lactose fördert Calciumresorption?

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Vom Beitragsersteller als hilfreich ausgezeichnet

Ne, tatsächlich ist die nicht abgebaute Lactose wohl dafür verantwortlich. Zitat dazu:

Carbohydrates that escape digestion in the ileum, and that are fermented in the colon, have been shown to enhance the colonic absorption of minerals, particularly calcium and magnesium. Thus, paradoxically, malabsorption of lactose enhances mineral absorption. This explains why lactose did not increase calcium absorption in lactase persistent adults. The positive effect on mineral absorption is attributable to increased mineral solubility and/or enhanced osmotic pressure following fermentation. Both changes enhance the paracellular (passive) transport of minerals across the epithelial wall. Using a stable isotope technique, Abrams et al. (2002) showed that a lactose-containing infant formula caused a 10.3% higher calcium absorption compared with a lactose-free formula. Part of the lactose must have escaped small intestinal absorption to have this positive effect.

Aus https://doi.org/10.1016/j.idairyj.2007.11.013