Phosphorus and Calcium
Each entry’s own grades, side by side. A grade says how strong the evidence is for one outcome — it does not rank one entry over the other.
Compound or practice
Phosphorus
An essential mineral you almost never need to supplement — deficiency is rare, and excess (from additives) is the real modern problem.
Grade B2 graded outcomesrevised Jul 10, 2026
A structured monograph in Prometheus's bundled library. Its grades are the monograph's own reading of the evidence, not a peer-reviewed review.
Compound or practice
Calcium
Food-first for bone; the supplement matters mainly when dairy is out — and megadosing may not be free of cardiovascular cost.
Grade B2 graded outcomesrevised Jul 10, 2026
A structured monograph in Prometheus's bundled library. Its grades are the monograph's own reading of the evidence, not a peer-reviewed review.
Graded in both
Outcomes are matched by name. Two entries can describe the same outcome in different words, so one listed further down may still be graded in the other.
No outcome has the same name in both entries. They may still overlap under different wording — read the two lists below.
Graded only in Phosphorus
- Deficiency correction (medical) Moderate effectEvidence grade B
- General supplementation Trivial effectEvidence grade D
Graded only in Calcium
- Fracture risk (with D, deficient) Small effectEvidence grade B
- Cardiovascular risk (supplements) Small effectEvidence grade C
What each entry says about the other
- Phosphorus’s entry · Mind the timing: Calcium and phosphate balance is tightly regulated; imbalance affects bone.
- Phosphorus’s entry · Watch with: Calcium and phosphate balance is tightly regulated; imbalance affects bone.
Both columns are read from the entries as they stand in this library. A comparison is not advice to take either one, and it is no substitute for a clinician who knows the person.