Stability Region Standard (Green Zone)
In Life Homeostasis Engineering, “stability” is not a feeling or a story. It is a pass/fail engineering judgment: whether a system state is inside a defined working region.
Stability is a region, not an idea
Life Homeostasis Engineering uses an industry-converged set of working ranges for hair mineral ratios as the only reference standard for the stability region (“Green Zone”).
A system state is considered stable if and only if all five ratios are simultaneously within their defined ranges. This is a 5D joint condition, not a single-metric judgment.
This standard is used as a public coordinate system: it does not drift with individual interpretation, and it enables consistent comparison across time.
Ratios are stable; absolute values vary
Hair testing can show lab-to-lab differences in absolute concentrations due to method, calibration, and processing differences. In contrast, ratios are treated as the stable engineering signal.
Engineering rule: use ratios as state variables; do not use absolute concentration values as the stability reference.
This preserves repeatability and comparability at the system level.
Stability Region (5-ratio reference ranges)
| Ratio | Working range (Green Zone) | Role |
|---|---|---|
| Na / K | 2.0 – 3.4 | Axis 1 of the 5D stability reference |
| Cu / Se | 7 – 30 | Axis 2 of the 5D stability reference |
| Cu / Zn | 0.083 – 0.25 | Axis 3 of the 5D stability reference |
| Fe / Mn | 7.5 – 15 | Axis 4 of the 5D stability reference |
| Ca / Mg | 4.0 – 11.0 | Axis 5 of the 5D stability reference |
Pass condition: the state is inside the stability region if and only if Na/K, Cu/Se, Cu/Zn, Fe/Mn, Ca/Mg are all within their Green Zone ranges at the same time.
Boundary note: This page defines an engineering reference standard for stability assessment based on hair mineral ratios. It is a measurement-and-navigation framework and is not presented as medical diagnosis or treatment.
How this standard is used
The stability region functions like a working envelope in engineering. The implementation steps are fixed:
- Measure the five ratios from a hair report.
- Map them into a 5D state (one axis per ratio).
- Check each axis against the Green Zone range.
- Judge the state as inside or outside the stability region.
- Use follow-up tests to verify whether the state returns to (and remains in) the Green Zone.