Why up to 3.5 million women are suffering from a hormonal deficiency that is systematically overlooked, misdiagnosed, and undertreated
When we talk about menopause, we talk about oestrogen. But the research tells a different story, one in which testosterone, long dismissed as a male hormone, sits at the centre of millions of women's unexplained fatigue, vanishing libido, brain fog, flat mood, and declining vitality. And almost no one is talking about it.
1. The Scale of the Problem in Australia
2. What Women Are Never Told About Testosterone
"Before menopause, women produce three times more testosterone than oestrogen. It is the dominant sex steroid by volume throughout a woman's reproductive life — yet it is almost never discussed."
| Androgen | Primary Source | Biologically Active? | Key Role |
|---|---|---|---|
| Testosterone (T) | Ovaries (25%), adrenals (25%), peripheral conversion (50%) | Yes — binds androgen receptors directly | Libido, energy, mood, cognition, bone, muscle, cardiovascular health |
| Dihydrotestosterone (DHT) | Peripheral conversion of T via 5α-reductase | Yes — most potent androgen | Tissue-level androgen activity; skin, hair follicles, genitourinary |
| DHEA | Adrenal glands (80%), ovaries (20%) | Prohormone — must convert to T or oestrogen | Precursor pool; mood, immune function, well-being |
| DHEAS | Almost exclusively adrenal | Prohormone — storage form of DHEA | Most abundant steroid in circulation; marker of adrenal function |
| Androstenedione (A4) | Adrenals and ovaries (roughly equal) | Prohormone — converts to T and oestrone | Key precursor; contributes to postmenopausal oestrogen via aromatisation |
| Androstenediol (Adiol) | Adrenal (rises sharply in perimenopause) | Yes — dual androgenic and oestrogenic activity | Critical perimenopausal buffer; may partially compensate for oestrogen loss |
Only testosterone and DHT bind androgen receptors directly. All others require peripheral conversion to exert androgenic effects.
3. The Hormonal Cascade — What Should Happen, and What Goes Wrong
| Phase | Oestradiol | Progesterone | Testosterone | Adrenal Androgens | Net Hormonal Effect |
|---|---|---|---|---|---|
| Reproductive prime (20s–30s) | Cyclic, adequate | Cyclic post-ovulation | Declining from peak | Peaking then declining | Hormonal sufficiency |
| Late reproductive / early peri (late 30s–40s) | Fluctuating, surging | Falling (anovulation) | ~50% of peak by 40 | Beginning to rise (SWAN) | Relative androgen loss underway |
| Mid-perimenopause | Wild fluctuation | Very low | Declining | Rising (85% of women) | Buffer in most; severe symptoms in 15% |
| Late peri / menopause | Collapsing | Near zero | Partly maintained (ovarian) | Peaking then declining | Relative androgenicity; oestrogen dominant loss |
| Early post-menopause | Very low | Zero | Ovary still contributes 40–50% | Declining | High T:E2 ratio; bone/CV/genitourinary risk |
| Late post-menopause (10+ yrs) | Very low | Zero | Progressively lower | Continuing decline | Full androgen insufficiency in many |
| Surgical menopause (oophorectomy) | Acute collapse | Zero | ~50% immediate drop | Adrenal partially compensates | Most severe deficiency state |
4. The Full Symptom Burden of Androgen Insufficiency
The symptoms below are frequently misattributed to depression, burnout, thyroid disorders, or oestrogen deficiency. Every single one overlaps with other conditions — which is precisely why androgen insufficiency goes undetected for so long.
Sexual Health
- Absent or drastically low libido (HSDD)
- Loss of sexual fantasies
- Reduced arousal and orgasm
- Diminished genital sensitivity
- Vaginal dryness and dyspareunia
Energy & Vitality
- Bone-deep exhaustion unrelieved by sleep
- Blunted motivation and drive
- Reduced exercise tolerance
- Loss of ambition and competitive edge
Mood & Psychology
- Dysphoric or persistently flat mood
- Depression not responding to antidepressants
- Anxiety and emotional fragility
- Loss of confidence and identity
- "Something is missing" — hard to name
Cognition
- Brain fog and word-finding difficulty
- Poor working memory
- Slowed mental processing
- Reduced focus and sharpness
Body & Bone
- Sarcopenia — loss of muscle mass
- Central weight gain
- Osteopenia and osteoporosis
- Thinning hair and dry skin
- Loss of pubic and axillary hair
Cardiovascular & Metabolic
- Loss of vascular nitric oxide protection
- Association with adverse CV outcomes
- Accelerated atherosclerosis post-oophorectomy
- Increased central adiposity and metabolic risk
| Symptom | Prevalence | Primary Hormone Driver | Androgen Component? |
|---|---|---|---|
| Hot flushes / night sweats | 70–80% | Oestrogen withdrawal | Partial — T:E2 ratio worsens bother |
| Sleep disturbance / exhaustion | ~85% find difficult | Oestrogen + vasomotor | Yes — testosterone supports energy and sleep quality |
| Low libido / HSDD | 40–50% | Testosterone primary driver | Yes — primary androgen-sensitive symptom |
| Brain fog | ~75% find difficult | Oestrogen + testosterone | Yes — androgen receptors in hippocampus and prefrontal cortex |
| Mood changes / depression | ~40–45% | Oestrogen + testosterone | Yes — testosterone supports dopaminergic pathways |
| Vaginal dryness / dyspareunia | >50% post-menopause | Oestrogen primary | Yes — androgens have direct independent effect on vaginal epithelium |
| Muscle loss / weakness | Progressive with age | Testosterone primary | Yes — testosterone critical for lean body mass |
| Bone loss | Accelerates post-menopause | Oestrogen + testosterone | Yes — testosterone stimulates osteoblast activity directly |
| Fatigue / low motivation | Majority of symptomatic women | Testosterone prominent | Yes — second most common androgen-related complaint |
| Anxiety | ~40% higher risk vs premenopause | Oestrogen fluctuation | Partial — DHEA may support GABAergic pathways |
Sources: British Menopause Society; Statista / Fawcett Society UK survey (2022); PMC primary research. Prevalence data reflects peri/postmenopausal populations.5. Why It Gets Worse — Compounding Factors
| Factor | Mechanism | Impact on Free Testosterone | Affected Group |
|---|---|---|---|
| Oral oestrogen MHT (tablets) | First-pass liver metabolism → raises SHBG, binding free T | Significant reduction in bioavailable testosterone | Any woman on oral oestrogen MHT |
| Combined oral contraceptive pill | Suppresses ovarian function + raises SHBG | Significant reduction; SHBG elevation can persist after cessation | Women on combined OCP (current or recent) |
| Bilateral oophorectomy | Removes 40–50% of testosterone source | ~50% acute drop in circulating testosterone | Women post-oophorectomy |
| Corticosteroids (oral) | Reduce adrenal and ovarian androgen production | Up to 75% reduction in total testosterone | Women on long-term steroid therapy |
| Chemotherapy / radiation | Ovarian damage; adrenal suppression | Significant; degree varies by treatment type | Cancer survivors |
| Opioids | Suppress HPG axis signalling | Moderate to significant reduction | Women on regular opioid therapy |
| Premature ovarian insufficiency | Early loss of ovarian androgen production | Significant reduction before expected natural decline | Women under 40 with POI |
| Adrenal insufficiency (Addison's) | Loss of adrenal androgen contribution | Significant reduction in DHEA/DHEAS and downstream T | Women with adrenal disease |
| Transdermal oestrogen MHT | Bypasses liver — minimal SHBG effect | Neutral — does not reduce free testosterone | Women on patches, gels, sprays |
"A woman who starts oral MHT tablets to relieve menopausal symptoms may unknowingly suppress what little free testosterone she has left — worsening the fatigue, flat mood, and low libido the medication was meant to help."
6. The Treatment Gap: How Many Australian Women Need Support?
| Barrier | Detail | Impact |
|---|---|---|
| Symptom overlap | Every androgen insufficiency symptom mimics depression, burnout, thyroid disorders, and oestrogen deficiency | Misdiagnosis is the norm; women referred for antidepressants or CBT |
| Testing imprecision | Standard immunoassay tests cannot accurately measure the low testosterone concentrations in women | Deficiency missed or falsely excluded |
| SHBG not routinely measured | Total testosterone measured but free testosterone (the active fraction) rarely calculated | Women with normal total T but high SHBG appear "normal" but are functionally deficient |
| Intracrine activity invisible | ~50% of androgen action occurs inside target tissues — not in circulating blood | Serum tests fundamentally miss tissue-level deficiency |
| Prescriber training gap | Menopause is not in the top 15 conditions managed by Australian GPs; ~80% of OB/GYNs lack formal menopause training | Women receive inappropriate or no treatment |
| Natural Medicines Awareness | Very few doctors and even natural medicine practitioners understand the importance of testosterone and how to boost it naturally. | |
| Institutional inertia | The T–libido link was published in 1959; clinical guidelines took 40+ more years to emerge | Many women still told symptoms are "just part of ageing" |
| Cultural silence | 1 in 2 Australian women go through menopause without consulting a health professional | Millions suffer in silence; self-manage with unproven supplements |
"The science is established. The regulatory framework exists. The clinical need is undeniable. What's missing is access, awareness, and a practical solution that meets women where they are at.
References: Davis SR et al., eBioMedicine 2025 (Australian Women's Midlife Years Study, LC-MS/MS); SWAN Study longitudinal data (McConnell et al.); Medical Journal of Australia (2023) — Advancing menopause care in Australia; Australasian Menopause Society guidelines and MHT dose guide (Nov 2024); International Menopause Society White Paper 2024; British Menopause Society / NICE guidelines; Menodoctor Australia Survey (5,000+ women, 2024); Australian Government Response to Senate Inquiry on Perimenopause and Menopause, February 2025; Balance Health Australia population data; Wellbeing of Women / UCL population estimates; PMC/NIH primary research on adrenal androgens and menopausal transition (SWAN, Burger et al., Davey 2012); Fertility & Sterility (2002); Cleveland Clinic Journal of Medicine (2021).
References & Research
- Davis SR, et al. Androgens and female health across the life cycle. Endocrine Reviews, 2019.
- Wierman ME, et al. Androgen therapy in women: a reappraisal. Journal of Clinical Endocrinology, 2014.
- Islam RM, et al. Safety and efficacy of testosterone for women. The Lancet Diabetes & Endocrinology, 2019.
- Shifren JL. Androgen deficiency in the oophorectomized woman. Fertility and Sterility, 2002.