The Short Answer
What Are the Symptoms of Low Testosterone in Women?
The most commonly reported symptoms of low testosterone in women are a marked drop in sexual desire, persistent fatigue that sleep does not fix, difficulty building or keeping muscle despite training, a flatter and less motivated mood, and a general sense of having lost an edge that is hard to name. Some women also notice thinning hair, drier skin, and a fall in the vividness of orgasm.
What makes low testosterone in women hard to recognise is that none of those symptoms points obviously at a hormone, and each has a more familiar explanation on offer. Low libido gets blamed on the relationship or on being busy. Fatigue gets blamed on children and work. Losing strength gets blamed on age. It is usually only when several arrive together, and stay, that anyone thinks to ask about androgens.
The clinical term is androgen deficiency, or sometimes low free testosterone in women. Testosterone is not a male hormone that women happen to have a little of. It is produced in the ovaries and adrenal glands throughout life, and a woman in her twenties typically carries around three times more testosterone than oestrogen by weight. It matters.
Explore Hormone EvaluationThe Blind Spot
Why Low Testosterone in Women Is So Often Missed
Three things conspire. First, testosterone is culturally coded as male, so neither patients nor many clinicians think to check it in a woman. Second, the symptoms overlap heavily with perimenopause, depression, thyroid disease and simple exhaustion, all of which get considered first. Third, and most importantly, the laboratory reference ranges for women were largely set from populations that were never screened for symptoms, so a result can sit inside the printed range while the woman in front of you is clearly deficient.
There is also a regulatory gap. No testosterone product is approved in the United States specifically for women, so the condition has no branded treatment marketing behind it and correspondingly little awareness. That does not make it less real. The Endocrine Society and the International Menopause Society both recognise hypoactive sexual desire in postmenopausal women as a condition in which testosterone has a demonstrated role.
The practical result is that many women arrive at a testosterone conversation years after symptoms began, often after oestrogen has been addressed and something is still missing.
Mechanism
What Testosterone Actually Does for Women
In women, testosterone acts directly on androgen receptors in muscle, bone, brain, skin and genital tissue, and it is also converted into oestrogen locally where it is needed. That dual role explains the breadth of symptoms when it falls. Muscle protein synthesis slows, which is why strength slips even with consistent training. Bone remodelling tips toward loss. Sebaceous glands quieten, which is why skin and hair change.
In the brain, testosterone supports dopamine signalling in the circuits that govern motivation, drive and sexual interest. This is the mechanism behind the symptom women describe most often and find hardest to explain: not sadness exactly, but a loss of appetite for things they used to want, sex included. Antidepressants are frequently prescribed at this point, and frequently do not help, because the deficit is not in serotonin.
Genital tissue is particularly androgen-dependent. Reduced arousal, reduced sensation and reduced orgasm intensity are not psychological symptoms in this context. They are tissue-level effects of a hormone that is no longer present in the amount those tissues expect.
Causes
What Causes Low Testosterone in Women?
The most common cause is time. Female testosterone production peaks in the twenties and falls steadily afterward, so that by the early fifties levels are typically around half of what they were. Unlike oestrogen, which drops sharply at menopause, testosterone declines gradually, which is one reason its symptoms creep rather than arrive.
Surgical menopause is the sharpest cause. Women who have had both ovaries removed lose roughly half of their testosterone production overnight, and the symptoms that follow are often attributed entirely to oestrogen loss when androgen loss is contributing just as much.
Other causes include oral oestrogen, including the combined contraceptive pill, which raises a binding protein called sex hormone-binding globulin and thereby lowers the free, usable fraction of testosterone even when total levels look normal. Adrenal insufficiency, pituitary disorders, chronic corticosteroid use, and some cases of premature ovarian insufficiency also reduce production. Chronic under-eating and very high training volumes can suppress the whole axis.
Testing
How Low Testosterone in Women Is Tested — and Why the Number Alone Misleads
Testosterone in women is measured with a blood test, ideally drawn in the morning when levels are highest, and ideally between days three and ten of the cycle in women who are still cycling. Two values matter: total testosterone, and free testosterone, which is the fraction not bound to sex hormone-binding globulin and therefore available to tissues. A woman on an oral contraceptive can have a normal total and a very low free level, and it is the free level that tracks symptoms.
The second problem is assay sensitivity. Standard testosterone assays were designed around male concentrations, and many are imprecise at the low end where all female values sit. A result of 15 ng/dL and a result of 25 ng/dL may be indistinguishable on a routine assay while representing a meaningful difference in a woman's physiology. Liquid chromatography mass spectrometry is more accurate and is worth requesting.
Most importantly, what is considered low testosterone in women is a clinical judgement, not a threshold. International guidance is explicit that there is no single blood level that defines deficiency in women, because reference ranges were not built from symptom-screened populations. The number is read alongside the symptom pattern, cycle status, medications, thyroid function, iron status and mood. A level read without that context is easy to dismiss and easy to over-treat in equal measure.
Treatment
Low Testosterone in Women: What Treatment Is and Is Not on the Table
Where testosterone is clinically appropriate, it is prescribed to women at roughly a tenth of male dosing, most commonly as a transdermal cream or gel applied to the skin, and titrated against both symptoms and repeat blood levels. Because no product is approved specifically for women in the United States, this is done using compounded preparations or carefully measured fractions of male products, which is exactly why it needs a prescriber who does this regularly rather than occasionally.
We do not publish dosing figures here. Appropriate dosing for a woman is set by a clinician against her levels and her response, and a number written on a blog is not a substitute for that. What we can say is that the goal is to restore levels to the upper part of the normal female range, never beyond it, and that exceeding it produces the side effects people fear: acne, unwanted hair growth, voice change and scalp thinning. Done carefully, those are avoidable, and reversible if caught.
It is also worth saying what testosterone does not do. It is not a treatment for low mood in the absence of other symptoms, it will not repair a relationship, and it does not reliably build muscle in a woman who is not also training and eating enough protein. And not every low reading needs treating. A woman with a low-normal level and no symptoms has a number, not a condition.
Pellets deserve a specific caution. Implanted testosterone pellets deliver a fixed amount for months and cannot be adjusted or removed easily if levels overshoot, which they frequently do in women. Most menopause societies advise against them for that reason.
Next Steps
When to Be Evaluated for Low Testosterone
The pattern most worth acting on is a combination that has persisted for months: sexual desire that has clearly fallen from your own baseline, energy that does not recover with rest, strength that is slipping despite consistent training, and a flatness of mood or motivation that does not feel like sadness. Together, and especially in the years around menopause or after ovarian surgery, that pattern warrants an androgen evaluation rather than another antidepressant.
Some symptoms need attention on their own terms regardless of hormones: rapidly increasing facial or body hair, a deepening voice, new acne after thirty, or a sudden change in cycle. Those suggest testosterone that is too high or a different cause entirely, and should be assessed directly.
Protocol Health evaluates women's hormones in Scarsdale and across Westchester County, and by telehealth in New York, New Jersey, Connecticut, Florida and California. An evaluation looks at your symptom pattern and history alongside properly timed labs — total and free testosterone, sex hormone-binding globulin, oestradiol, thyroid and iron — because in women more than anywhere else, the testosterone number on its own tells you almost nothing.
FAQ
Frequently Asked Questions
What does a woman with low testosterone look like?
Usually like herself, but dimmed. Low testosterone in women rarely produces a visible sign. The presentation is a combination of lost sexual desire, fatigue that rest does not fix, difficulty holding muscle despite training, drier skin or thinning hair, and a flatness of mood and motivation that does not feel like depression. It is a pattern, not an appearance.
What is considered low testosterone in women?
There is no single blood level that defines it. Female reference ranges were not built from symptom-screened populations, and routine assays are imprecise at female concentrations. Clinicians read total and free testosterone together with symptoms, cycle status, medications and thyroid and iron results. A number read alone is easy to dismiss and easy to over-treat.
What causes low testosterone in women?
Most often, age: production peaks in the twenties and roughly halves by the early fifties. Surgical removal of both ovaries drops it abruptly. Oral oestrogen and the combined pill lower the free, usable fraction by raising sex hormone-binding globulin. Adrenal or pituitary disorders, chronic corticosteroids, premature ovarian insufficiency, and chronic under-fuelling with heavy training can also suppress it.
Can low testosterone in women cause weight gain?
Indirectly. Testosterone supports muscle, and muscle is the main driver of resting energy expenditure, so losing it makes fat gain easier and fat loss harder. Low testosterone also flattens motivation and energy, which affects training and appetite. It is not a direct weight-regulating hormone, but the pattern it sits inside often includes weight change.
How can a woman increase her testosterone?
Resistance training, adequate protein and energy intake, sufficient sleep and managing chronic stress all support the body's own production. Reviewing medications that raise sex hormone-binding globulin, particularly oral oestrogen, can raise the usable fraction. Where a genuine deficiency is confirmed, prescribed transdermal testosterone at female doses is the evidence-based option. Over-the-counter boosters have no evidence in women.
Is testosterone therapy safe for women?
At female doses, titrated against symptoms and repeat blood levels, the evidence to date is reassuring for cardiovascular and breast outcomes, though long-term data remain limited. The side effects people fear — acne, unwanted hair, voice change — come from levels exceeding the normal female range, which is avoidable with careful dosing and monitoring and is the main reason pellets are discouraged.
Is low testosterone in women the same as perimenopause?
No, though they overlap. Perimenopause is driven by fluctuating and falling oestrogen and progesterone, with hot flushes, sleep disruption and cycle change as hallmarks. Low testosterone declines more gradually and shows up as lost libido, energy and strength. Many women in perimenopause have both, which is why oestrogen alone sometimes resolves the flushes but not the flatness.
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