Dietary calcium from a dairy matrix provides better protection than mineral calcium against haem-induced gut redox imbalance and microbiota dysbiosis in male rats.

This study aimed to compare impacts of dietary calcium provided as calcium salts or dairy matrix on gut homeostasis perturbations by high haeminic or non-haeminic iron intakes. A 3-week intervention study was conducted using Fisher 344 rats. Fecal microbiota composition was analysed using 16S rRNA gene amplicon sequencing (V3-V4 Illumina Miseq).