Vitamin D/K2 product details, sufficiency logic, K2 evidence limits, and monitoring rules are now folded into Endocrine / Vitamin Watchlist.
supplements · vitamins · bone-health · cardiovascular · archived
This page is preserved as an old anchor. The active guidance has moved to Endocrine / Vitamin Watchlist.
Original content was archived before consolidation at archive/endocrine-vitamin-originals-2026-05-10.md.
Use the canonical owner for current calcium/PTH/D monitoring, vitamin D/K2 interpretation, thyroid trigger rules, and evidence links.