process
Calcium absorption
Calcium crosses the intestinal lining through active transport and passive diffusion.
Educational draft · Human scientific and editorial review pending. About review status
About Calcium absorption
Vitamin D is required for the active transport pathway. Absorption also varies with intake, age, and other context.
Where does vitamin D come from—and where does it go?Related topics
Vitamin D promotes Calcium absorption
Vitamin D promotes calcium absorption in the gut and supports the active transport pathway.
Evidence: Established · Source checked 2026-09-04 · Sources: NIH Office of Dietary Supplements: Vitamin D: Fact Sheet for Health Professionals
References
Source-checked local draft.
Human editorial review pending.