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BRS6(PM4) - Cortisol Rhythm Regulation​

1. Definition​

Regulation of the diurnal cortisol pattern, especially morning activation and evening downshift.

2. Mechanistic Basis​

↑ diurnal cortisol rhythm stability; ↓ evening stress-hormone drift

3. Dependencies​

3.1 KCs (Key Constraints)​

3.2 Optional BRSX Modifiers​

  • None listed

3.3 Co-factors​

  • vitamin C
  • magnesium
  • B5
  • B6

4. Dietary Modulation​

regular breakfast / meal timing → metabolic timing signal; daylight exposure → morning circadian cue; consistent sleep timing → cortisol rhythm stability; late-night eating / light → antagonistic circadian signal

5. Functional Outputs (Directional Effects)​

↑ diurnal cortisol rhythm stability; ↓ evening stress-hormone drift

6. System Integration​

Integrated within BRS6(FM2) as a timing-sensitive mechanism coordinating meal cues, circadian entrainment, and cortisol rhythm stability.

7. Key Insight​

PM3 primarily governs when stress-hormone signalling is expressed across the day, making timing and rhythm coherence central to mechanism support.

8. Functional Mechanism Ownership​

  • BRS6(FM2)

9. Intervention Dominance​

  • Lifestyle-Dominant

10. Constraints and Failure Modes​

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11. Notes​

  • Evidence Type: Human + mechanistic
  • Evidence Notes: Not diet-only. Diet timing is one entrainment signal among light, sleep, and stress load.

Mechanism Summary Table​

FieldValue
PM IDBRS6(PM4)
FM Ownership (Column P)BRS6(FM2)
Dose Target / RequirementDaily consistency of sleep, light, and feeding cues
Coverage TimingDaily
Response TypeHours–Days
Functional LatencySame day–Days

12. References​

13. Missing Entities​

  • None flagged from this row-level pass