Eight HPG disorders on one substrate: one drive, two failures, one lever
Eight common HPG disorders map to one substrate: one drive, two failure modes, one lever. PCOS (fast pulse, LH-biased rate 0.0135) and functional hypothalamic amenorrhoea (slow, 0.0025) are opposite ends of one pulse-frequency axis. Menopause is irreversible loss of the bistable secretory latch (ON 1.0 → 0.229). Retrodictions sim-verified; novel hypotheses open — not clinical advice.
Each disorder is mapped to the substrate failure the dynamics chapters verified, with its current treatment read as a substrate move and a falsifiable better-treatment hypothesis. PCOS (pulse rate 0.0135) and FHA (0.0025) sit at opposite ends of one pulse-frequency axis; menopause is latch collapse on follicular depletion (1.0 → 0.229), irreversible.
The split is by mechanism, not body part
This package owns the common, dynamics-defined disorders of the HPG axis; rare monogenic subtypes cross-reference to the disease whitepaper. Every disorder is one of two failure modes of the same drive — a broken oscillator or a crossed oncogenic switch — resolved by the temporal-pattern lever.
PCOS and FHA: opposite ends of one axis
PCOS is the GnRH generator stuck too fast, biasing LH over FSH so follicles are recruited but none is selected; the substrate confirms a faster generator gives a higher pulse rate (0.0135 versus 0.00325). Functional hypothalamic amenorrhoea is the same generator slowed below the ovulatory rate (0.0025 versus normal 0.0075) — the two diseases are opposite ends of one pulse-frequency axis.
Menopause is irreversible latch loss
The sustained secretory (ON) state is a property of the bistable R19 well: an intact ovary latches ON and holds it at zero drive (1.0), but a depleted follicle pool removes the well so the latch collapses (0.229). The model is explicit that HRT is replacement, not restoration — the secretory hardware is gone.
The full map
Existing practices the framework retrodicts are flagged as validation; genuinely novel suggestions are graded open and need clinical validation.
| disorder | substrate failure mode | model-derived hypothesis | grade |
|---|---|---|---|
| PCOS (anovulatory phenotype) | GnRH pulse generator runs too FAST -> chronic LH excess, low FSH -> follicles recruited but none selected, no dominant follicle, no surge (chronic anovulation) | restore the SLOW pulse pattern itself -- low-frequency PULSATILE GnRH (not continuous, not fast) to re-establish the FSH-favouring rhythm and physiological follicle selection | [O] novel pattern-restoration |
| Functional hypothalamic amenorrhoea (FHA) | energy deficit / stress SLOW the GnRH pulse generator below the ovulatory pulse frequency (PCOS and FHA are opposite ends of one pulse-frequency axis); reversible | pulsatile GnRH at PHYSIOLOGICAL frequency restores the generator's rate -- the model says the missing thing is the pulse PATTERN/rate, not the molecule | [V]/[L] retrodicts pulsatile-GnRH |
| Menopause / perimenopause | follicle pool (ovarian responder substrate) exhausted -> the bistable secretory latch is lost; irreversible substrate depletion, NOT detuning | the model is explicit that this is REPLACEMENT, not restoration: the oscillator hardware is gone, so the honest in-framework lever is replacement with the cancer-risk trade-off made explicit (same h that lowers the breast barrier) -- restoration would need follicle regeneration (out of scope) | [O] irreversibility is the obstacle |
| Age-related male hypogonadism | sustained androgen drive decays with age -> hypogonadal symptoms | TRT re-supplies the SAME androgen drive that lowers the prostate R19 barrier (trade-off). The temporal-pattern lever predicts that PULSATILE or cycled delivery might separate the wanted androgenic tone from the unwanted sustained proliferative drive | [O] novel |
| Central precocious puberty | the GnRH axis crosses the T5 spinodal too EARLY -> premature pulsatile reactivation | retrodiction: continuous GnRH agonist = depolarisation block of the generator (same mechanism the therapy module shows) -> axis switched OFF; the standard of care is exactly the substrate-predicted move | [V] retrodiction (continuous = suppression) |
| Delayed puberty (functional / constitutional) | drive has not yet crossed the T5 spinodal -> axis still OFF | supply drive to cross the spinodal; pulsatile GnRH drives the generator (activation pattern) where continuous would block it | [V] retrodiction (pulsatile = activation) |
| Anovulatory infertility (surge failure) | the mid-cycle LH-surge switch fails to flip -> no ovulation | retrodiction: the hCG trigger is a single SPINODAL KICK forcing the surge switch onto the ON branch -- the model identifies why a one-shot trigger (not sustained drive) is the right move at that moment | [V]/[L] retrodicts the hCG trigger as a spinodal kick |
| Endometriosis (oestrogen-dependent) | oestrogen-driven ECTOPIC proliferation -- SAME drive variable as breast carcinoma, benign but in the wrong location (one drive, different outcome) | suppression is the goal here, so the model says CONTINUOUS (block) is correct and warns that a cycling/pulsatile schedule would RE-stimulate -- the same lever, read in the opposite direction from the cancer case | [V] retrodiction (continuous suppression is correct for a suppression goal) |
The unifying thesis
One drive h, moved two opposite ways. Lower the barrier and the R19 oncogenic switch crosses (every HRT/TRT carries a cancer-risk signature); supply the wrong pattern and an HPG oscillator disease appears (every anti-hormone cancer therapy carries hypogonadal effects).
The single control axis the framework exposes is temporal pattern, which retrodicts pulsatile-GnRH, GnRH-agonist desensitisation, the hCG trigger as a spinodal kick, Bipolar Androgen Therapy, the LTED pulse, the saturation model, and HPV×smoking multiplicativity.
Mechanisms are sim-verified [V]; retrodictions [V]/[L]; genuinely novel hypotheses (low-frequency pulsatile restoration in PCOS; pulsed/cycled TRT) are graded [O] and explicitly require clinical validation. None of this is clinical advice.