B12 signal interpretation, oral replacement, homocysteine/folate follow-up, and MMA/neurology triggers are now folded into Iron, B12 & Malabsorption.
b12 · homocysteine · vegetarian-diet · brain-fog · neurology · malabsorption · archived
This page is preserved as an old anchor. The active guidance has moved to Iron, B12 & Malabsorption.
Original content was archived before consolidation at archive/iron-b12-malabsorption-originals-2026-05-10.md.
Use the canonical owner for current iron thresholds, oral iron dosing/timing, B12 follow-up, celiac/autoimmune-gastritis triggers, local test availability, and evidence links.