Testosterone is considered a male hormone, but it also plays an important role in women's energy, libido, muscle mass, and mood. A deficiency often goes undiagnosed because the symptoms are diffuse and rarely directly associated with testosterone. This article explains how to recognize a testosterone deficiency, what causes it, and what really helps.
Fatigue, loss of libido, feeling disconnected from one's body: Testosterone deficiency in women often goes undiagnosed for years because the symptoms are diffuse and no one thinks of it. Yet it affects women of all ages, not just during menopause.
Energy
Persistent fatigue, lack of drive despite sufficient sleep
Libido
Lack of sexual interest, reduced arousal
Body
Muscle loss, weight gain despite unchanged diet
Mood
Depressed mood, concentration problems, irritability
What is testosterone in women and why do we need it?
The normal total testosterone range for women varies between 0.1 and 0.8 ng/ml, depending on the lab, with values fluctuating throughout the day and the menstrual cycle. However, it's not just total testosterone that matters, but free testosterone, which is the biologically active portion. The rest is bound to SHBG (Sex Hormone-Binding Globulin) and thus inactive. A high SHBG level can lead to a functional deficiency despite normal total testosterone.
Symptoms: How testosterone deficiency manifests in women
The symptoms are often non-specific and are frequently attributed to stress, exhaustion, or depression. This makes diagnosis difficult. This combination should raise a red flag:
| Symptom Area | Typical Complaints | Frequency |
|---|---|---|
| Energy & Drive | Chronic fatigue, lack of motivation, exhaustion after minor efforts | Very common |
| Sexuality | Loss of libido, reduced arousal, difficulty with orgasm | Very common |
| Body Composition | Muscle loss, difficulty building strength, weight gain especially around the abdomen | Common |
| Psyche & Cognition | Depressed mood, irritability, concentration problems, brain fog | Common |
| Skin & Hair | Dry skin, brittle nails, thinning pubic hair | Less common |
| Bones | Increased risk of osteoporosis long-term, joint and muscle pain | Long-term |
Diagnosis: Which blood values are truly relevant
| Marker | Normal Range Female | Why Relevant |
|---|---|---|
| Total Testosterone | 0.1 to 0.8 ng/ml | Starting point, but of little predictive value on its own |
| Free Testosterone | 0.3 to 1.9 pg/ml (lab-dependent) | Biologically active portion, most important value |
| SHBG | 20 to 130 nmol/l | High when on the pill: binds testosterone away |
| DHEA-S | 65 to 380 µg/dl | Shows adrenal function, precursor to testosterone |
| LH / FSH | Cycle-dependent | Shows whether ovaries are stimulated |
Important: Blood should ideally be drawn in the morning between 8 and 10 AM, as testosterone reaches its daily low in the afternoon. For women with a cycle, measure preferably in the early follicular phase (cycle day 2 to 5).
The most common causes of testosterone deficiency in women
Menopause and Perimenopause
Testosterone production continuously declines from age 30. With the onset of perimenopause and the decline in ovarian function, testosterone levels can drop to one-third of youthful levels. This is the most common cause and is often overlooked due to the dominant discussion about estrogen.
Combined Pill and High SHBG
The pill increases the liver's production of SHBG three to fourfold. This binds free testosterone, leading to a functional deficiency. Problematic: SHBG can remain elevated months after stopping the pill, a phenomenon known as post-pill SHBG. More on this in the Pill Discontinuation Guide.
Chronic Stress and Cortisol Excess
Cortisol and testosterone compete for the same precursor: pregnenolone. Under chronically high stress, pregnenolone is preferentially converted to cortisol, and testosterone production decreases. This mechanism is sometimes referred to as "pregnenolone steal," even if the term is an oversimplification.
Hypopituitarism and Adrenal Insufficiency
If the pituitary gland or adrenal glands do not stimulate or produce enough, testosterone decreases. This is rarer but clinically important to rule out, especially if LH and FSH are also low.
Underweight, Restrictive Diet, and Overtraining
The body needs sufficient calories and fat for hormone production. Too little energy, too little fat in the diet, or too much training without adequate recovery can inhibit testosterone production. This is more common than thought, especially in female athletes.
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Frequently Asked Questions about Testosterone Deficiency in Women
What are typical signs of low testosterone in women?
How is testosterone deficiency diagnosed in women?
Kann man Testosteron bei Frauen natürlich erhöhen?
Macht die Pille Testosteronmangel schlimmer?
Ist Testosteron bei Frauen in den Wechseljahren relevant?
Scientific Sources
- Davis SR, Wahlin-Jacobsen S. Testosterone in women: the clinical significance. Lancet Diabetes Endocrinol, 2015;3(12):980-992.
- Wierman ME, Arlt W, Basson R, et al. Androgen therapy in women: a reappraisal. J Clin Endocrinol Metab, 2014;99(10):3489-3510.
- Panay N, Anderson RA, Nappi RE, et al. Testosterone therapy in women: an Endocrine Society position statement. J Clin Endocrinol Metab, 2019;104(10):4660-4666.
- Goldstat R, Briganti E, Tran J, Wolfe R, Davis SR. Transdermal testosterone therapy improves well-being, mood, and sexual function in premenopausal women. Menopause, 2003;10(5):390-398.
- Worboys S, Kotsopoulos D, Teede H, McGrath B, Davis SR. Evidence that parenteral testosterone therapy may improve endurance capacity in postmenopausal women. J Clin Endocrinol Metab, 2001;86(10):4829-4835.
- Simon JA, Braunstein GD, Nachtigall L, et al. Testosterone patch increases sexual activity and desire in surgically menopausal women with hypoactive sexual desire disorder. J Clin Endocrinol Metab, 2005;90(9):5226-5233.
- Fooladi E, Bell RJ, Jane F, Robinson PJ, Kulkarni J, Davis SR. Testosterone improves antidepressant-emergent loss of libido in women. J Sex Med, 2014;11(3):831-839.
- Somboonporn W, Davis S, Seif MW, Bell R. Testosterone for peri- and postmenopausal women. Cochrane Database Syst Rev, 2005;(4):CD004509.
- Burger HG, Hailes J, Menelaus M, Nelson J, Hudson B, Balazs N. The management of persistent menopausal symptoms with oestradiol-testosterone implants. Maturitas, 1984;6(4):351-358.
- Traish AM, Vignozzi L, Simon JA, Goldstein I, Kim NN. Role of androgens in female genitourinary tissue structure and function. J Sex Med, 2018;15(3):322-344.
- Hamalainen E, Adlercreutz H, Puska P, Pietinen P. Diet and serum sex hormones in healthy men. J Steroid Biochem, 1984;20(1):459-464.
- Prasad AS, Mantzoros CS, Beck FW, Hess JW, Brewer GJ. Zinc status and serum testosterone levels of healthy adults. Nutrition, 1996;12(5):344-348.
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