Clinical Insights • Women’s Hormones

Testosterone Isn’t Just a Men’s Hormone

Testosterone matters for women too, from desire to muscle to the estrogen you make. Here’s what it does, what lowers it, and why it’s so often overlooked.


You asked about your energy. Your drive. Your desire.

You were told it was stress. Or perimenopause. Or a busy season of life. Or “just how it is.”

Almost no one mentioned testosterone.

That isn’t an accident. Testosterone has been framed as the male hormone for so long that most women (and plenty of providers) never think to ask about it. There are FDA-approved testosterone products for men. For women, there are none. When the system doesn’t build a product for you, it also stops building the conversation.

So let’s have the conversation. This post covers where women make testosterone, what it does, what lowers it, and what I look at from a functional medicine perspective. Numbers in brackets point to the references at the end.

Woman in workout clothes flexing both arms, seen from behind
Testosterone supports desire, muscle, bone, and even the estrogen women make.
The Basics

You Make More of It Than You Think

In a woman’s body, testosterone circulates at higher levels than estradiol does. It’s one of your major hormones, not a rounding error. You make it in three ways:[1]

Ovaries~25%

made directly

Adrenal Glands~25%

made directly

Your Tissues~50%

converted from DHEA and androstenedione in fat, skin, and muscle

Its pattern over a lifetime is also not what most women expect:

01

It Declines Gradually With Age

Levels are highest in your 20s and slide through your 30s and 40s, well before menopause.[2]

02

Natural Menopause Doesn’t Make It Fall Off a Cliff

Your ovaries keep making testosterone after menopause. But surgical removal of the ovaries drops levels by about half.[2]

03

Adrenal Precursors Decline With Age

DHEA and related hormones fall steadily through midlife, which matters because your tissues rely on them as raw material.[3]

What It Does

An Honest Look at the Evidence

Androgen receptors are found throughout your body: your brain, muscle, bone, fat, skin, and the tissues of the vagina and vulva.[4] So testosterone has plenty of places to work. What we can say with confidence varies a lot by area:

WhereWhat It DoesEvidence in Women
Sexual desire and arousalSupports desire, arousal, and satisfactionStrongest
Best supported in postmenopausal women with low desire[4]
Muscle and boneSupports muscle maintenance and boneLimited
Plausible biology, limited evidence in women
Mood, energy, and thinkingLinked to wellbeing and driveMixed
Not firmly established[4]
Your estrogen supplyConverted to estradiol by the enzyme aromataseWell Established
After menopause, much of your estrogen comes from converting androgens in tissue[5]
The Row Most Women Have Never Heard

Testosterone and its precursors are raw material for your estrogen. After menopause, when the ovaries stop making much estradiol, this conversion is one of your main remaining sources. So an androgen problem can quietly become an estrogen problem.

And the first row is why many women ask about testosterone in the first place: low desire is the symptom with the clearest evidence behind it. For energy, motivation, and body composition, the honest answer is that research in women is still catching up. I’d rather tell you that than overpromise.

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The Root Causes

What Can Lower It

This is where functional medicine thinking helps, because low testosterone in women is rarely just about age. These are the factors I look for:

💊

Hormonal Birth Control

Oral contraceptives raise SHBG (the protein that binds testosterone) and lower the amount free to act. In a meta-analysis, combined oral contraceptives lowered both total and free testosterone.[6]

💧

Oral Estrogen

Like the pill, it can raise SHBG and leave less testosterone available. It’s a route-of-delivery detail many women never hear about.

✂️

Surgical or Early Menopause

Removing the ovaries or losing ovarian function early lowers levels more abruptly.[2]

⚡

Chronic Stress and Adrenal Output

Your adrenals make a good share of your androgen precursors. Long-term stress and steroid medications such as prednisone can suppress them.

🦋

Insulin and Thyroid Status

Both influence SHBG. Insulin resistance tends to lower it, an underactive thyroid lowers it, and an overactive thyroid raises it. That shifts how much testosterone is free. (More on the thyroid connection.)

🍽️

Under-Eating and Overtraining

Not enough fuel for the amount of exercise you do can suppress your whole hormone system, not just one hormone.

🌙

Sleep

Poor sleep disrupts your hormone rhythms across the board.

📋

Medications

Some medicines, such as certain antidepressants and opioids, can lower desire or hormone levels.

Too Much Isn’t Better

The Goal Is Balance, Not a Bigger Number

Testosterone in women isn’t a more-is-better situation. The opposite problem is common, and I see it often in younger women.

When testosterone runs high, it shows up as jawline acne, coarse chin or body hair, scalp thinning, and irregular cycles. The most common cause is polycystic ovary syndrome (PCOS), where insulin resistance pushes the ovaries to make more androgens.[7]

That’s a metabolic problem, and it responds to metabolic care: blood sugar, strength training, sleep, and a proper workup.

Check These First

Low Desire Has Many Causes

If your concern is low desire or low energy, please don’t skip straight to testosterone. These commonly overlap, and I check them first:

  • Thyroid and iron (ferritin) problems
  • Depression and anxiety, and the medications used to treat them
  • Sleep problems, including sleep apnea
  • Vaginal dryness or pain with intercourse, which is very treatable and common after menopause
  • Chronic stress and burnout
  • Relationship factors
  • Blood sugar problems

Often it’s several of these at once. I cover this overlap, and how to check testosterone properly, in my post on how low testosterone gets missed.

The Functional Medicine Workup

What I Look At

There’s no single “perfect” testosterone number for women, and no agreed-upon cutoff that defines a deficiency. A major Endocrine Society guideline even advises against diagnosing “androgen deficiency” based on a lab value alone.[8] So I look at patterns, not one number:

  1. 1

    The Testing Method

    Low levels are hard to measure accurately. I prefer a sensitive method (LC-MS/MS) and look at total testosterone together with SHBG, then calculate free testosterone from there.

  2. 2

    SHBG, DHEA-S, and Estradiol

    To see what’s available, what the adrenals are contributing, and what testosterone may be converting to.

  3. 3

    Thyroid, Ferritin, and Blood Sugar

    TSH, free T3 and T4, ferritin, fasting glucose, fasting insulin, and A1c, because they overlap with the same symptoms and influence SHBG.

  4. 4

    Medications and Timing

    Birth control, oral estrogen, steroids, and where you are in your cycle or stage of life.

  5. 5

    Your Whole Picture

    Sleep, stress, mood, desire, energy, recovery, and what has changed.

Four Working Patterns

I also use my four hormone patterns to organize the questions:

Deficiency & Depletion

Low drive, slow recovery, losing muscle, dry skin

Dysregulated Rhythm

Wired and tired, poor sleep, high stress load

Traffic Misdirection

Insulin resistance, stubborn midsection weight, acne or hair changes

Overloaded Clearance

High SHBG, sluggish hormone processing, bloating

These are clues that organize questions. They don’t diagnose a cause.

The Foundations

What You Can Do Now

Whatever your numbers show, these support healthy androgen balance:

  • Strength training. It supports muscle and bone, and builds the tissue testosterone works on. (So does creatine.)
  • Protein at every meal. Your muscle needs raw material, and needs go up in midlife.
  • Eat enough. Match your fuel to your training. Chronic under-eating works against your hormones.
  • Steady blood sugar. It keeps insulin and SHBG in a healthier range.
  • Protect your sleep. A steady wake time and morning light anchor your rhythm.
  • Manage your stress load. Your adrenals contribute to your androgen pool.
Testosterone Therapy

What About Testosterone Therapy?

Here’s the short version. There are no FDA-approved testosterone products for women in the United States, so any prescription is off-label, often a much lower dose of a men’s product or a compounded preparation. The best evidence supports it for low sexual desire in postmenopausal women, and expert groups recommend it for that reason and not for other uses.[4], [9] Long-term safety data is still limited.

That doesn’t take it off the table. It means it needs a knowledgeable provider, appropriate labs, and ongoing monitoring. Whether it’s right for you is a conversation for you and your prescriber.

When to Talk to Your Provider

Please talk with your healthcare provider if you notice new facial or body hair, a deepening voice, rapid hair loss, missed periods, or symptoms like persistent fatigue, low mood, or loss of desire that don’t improve. Don’t wait for it to pass.

Your Next Step

The System Hasn’t Made It Easy. You Can Still Get Answers.

If you haven’t yet, start with the free Hormone Type Assessment. And if you’d rather talk through what’s going on with your energy, drive, and hormones, I offer a free discovery call. No pressure, just a conversation about whether functional medicine is the right next step for you.

Book Your Free Discovery Call →

To your health and vitality, Dr. Ryan

Common Questions

Frequently Asked Questions

Do women need testosterone?

Yes. Women make testosterone in the ovaries, adrenal glands, and tissues, and it circulates at higher levels than estradiol. It supports sexual desire and serves as raw material for estrogen, especially after menopause.

What are signs of low testosterone in women?

Low sexual desire is the symptom with the strongest evidence. Fatigue, low drive, and slower recovery are often reported, but they overlap with thyroid, iron, sleep, mood, and blood sugar problems, which should be checked too.

Does birth control lower testosterone?

Combined oral contraceptives raise SHBG, the protein that binds testosterone, and a meta-analysis found they lower both total and free testosterone. Oral estrogen can have a similar effect on SHBG.

What causes high testosterone in women?

The most common cause is polycystic ovary syndrome (PCOS), where insulin resistance drives the ovaries to make more androgens. Signs include jawline acne, coarse facial or body hair, scalp thinning, and irregular cycles.

Is testosterone therapy approved for women?

Not in the United States. There are no FDA-approved testosterone products for women, so prescriptions are off-label. Expert guidelines support it mainly for low sexual desire in postmenopausal women, with careful monitoring.

For educational purposes only. Not a diagnosis, and not a substitute for care from your healthcare provider. Talk with your provider before starting, stopping, or changing any medication or supplement.

References
  1. Burger HG. Androgen production in women. Fertil Steril. 2002;77(Suppl 4):S3–S5.
  2. Davison SL, Bell R, Donath S, Montalto JG, Davis SR. Androgen levels in adult females: changes with age, menopause, and oophorectomy. J Clin Endocrinol Metab. 2005;90(7):3847–3853.
  3. Labrie F, Bélanger A, Cusan L, Gomez JL, Candas B. Marked decline in serum concentrations of adrenal C19 sex steroid precursors and conjugated androgen metabolites during aging. J Clin Endocrinol Metab. 1997;82(8):2396–2402.
  4. Davis SR, Baber R, Panay N, et al. Global consensus position statement on the use of testosterone therapy for women. J Clin Endocrinol Metab. 2019;104(10):4660–4666.
  5. Simpson ER. Sources of estrogen and their importance. J Steroid Biochem Mol Biol. 2003;86(3–5):225–230.
  6. Zimmerman Y, Eijkemans MJ, Coelingh Bennink HJ, Blankenstein MA, Fauser BC. The effect of combined oral contraception on testosterone levels in healthy women: a systematic review and meta-analysis. Hum Reprod Update. 2014;20(1):76–105.
  7. Teede HJ, Tay CT, Laven JJE, et al. Recommendations from the 2023 international evidence-based guideline for the assessment and management of polycystic ovary syndrome. Fertil Steril. 2023;120(4):767–793.
  8. Wierman ME, Arlt W, Basson R, et al. Androgen therapy in women: a reappraisal: an Endocrine Society clinical practice guideline. J Clin Endocrinol Metab. 2014;99(10):3489–3510.
  9. Parish SJ, Simon JA, Davis SR, et al. International Society for the Study of Women’s Sexual Health clinical practice guideline for the use of systemic testosterone for hypoactive sexual desire disorder in women. J Sex Med. 2021;18(5):849–867.