In short: pubic hair loss
A slow, even thinning of pubic hair from around age 40 to 50 is physiologically normal. It is androgen-dependent and responds to the age-related drop in estrogen (women, menopause) or testosterone (men, where free testosterone declines by about 1.3 percent per year from roughly age 35, according to a 2024 PMC review). A sudden, one-sided loss, or one accompanied by skin changes, can be a warning sign and should be checked by a doctor.
The most common causes at a glance:
- Normal: hormonal decline in menopause and andropause, a slower hair cycle
- Worth checking: thyroid disorders, pituitary/adrenal insufficiency, lichen sclerosus
- Reversible/triggering: iron deficiency, stress, chemotherapy, certain medications
Pubic hair loss leaves many people uneasy, because the topic is rarely discussed openly. This article explains what about the loss of pubic hair is age-related and harmless, and when it should be checked by a doctor. Every statement draws on current dermatological and endocrinological sources. Last updated: 2026.
Summary
- Why does pubic hair change with age?
- When to see a doctor about pubic hair loss (warning signs)
- Common changes in pubic hair
- Pubic hair with age: differences between women and men
- Causes of pubic hair loss
- Preserving pubic hair and preventing changes
- Are there downsides to having less pubic hair? The protective function
- Social and psychological aspects
- Medical and cosmetic options
- Does pubic hair grow back after it falls out?
- Frequently asked questions about pubic hair loss
- Conclusion: understand a natural change and act with purpose
- Sources
Why does pubic hair change with age?
Pubic hair changes with age because it is androgen-dependent and the body produces fewer sex hormones over the years. Before puberty, the pubic region carries only fine vellus hair. It takes androgens such as testosterone, DHT and DHEA to convert it into thicker terminal hair (Inui et al., Experimental Dermatology 2013). When those hormones fall again, the process partly reverses.
Hormonal changes: the key mechanism
Hormonal changes are the most important reason pubic hair declines with age. In men, total testosterone falls by about 0.4 percent per year from around age 35, and free testosterone by about 1.3 percent, according to a 2024 PMC review. Because the decline is gradual, the thinning of hormone-driven body hair tends to be milder and to start later in men.
In women, ovarian estrogen production falls to about 10 percent of premenopausal levels during menopause (PubMed 2012). In an International Menopause Society study of 758 postmenopausal women (2011), 41 percent reported hair loss, and diffuse overall loss correlated significantly with body hair loss and older age. For more on this, see our article on hair loss in women.
Natural aging of the hair cycle
The hair cycle itself also slows down, which makes pubic hair look thinner. Pubic hair naturally has a short cycle: the growth phase (anagen) lasts only 2 to 6 months, compared with 2 to 7 years on the scalp (The Trichological Society). With age the anagen phase shortens and the resting phase (telogen) lengthens. As a result, fewer follicles are active at the same time and density decreases.
Genetic and individual factors
How early and how strongly pubic hair changes depends heavily on genetic predisposition. Some people keep dense hair well into old age, while others notice thinning early on. Much as with graying or androgenetic alopecia on the scalp, individual disposition determines the timing and extent. Specific study data on pubic hair alone are still lacking here.
When to see a doctor about pubic hair loss (warning signs)
Pubic hair loss is a warning sign when it appears suddenly, on one side, or together with skin changes. A slow, even decline over the years, by contrast, fits with aging and is usually harmless. The overview below helps with a first assessment, but it does not replace a medical examination.
| More likely normal (age-related) | Have it checked by a doctor |
|---|---|
| Slowly over years, thinning evenly | Suddenly within weeks |
| Bilateral and evenly distributed | One-sided or patchy bald spots |
| No skin changes, no itching | Itching, redness, burning, white hardened skin (lichen sclerosus) |
| No other symptoms | Fatigue, weight change, cold sensitivity (thyroid) |
| Fits with menopause or andropause | Menstrual irregularities together with hair loss (PCOS, pituitary) |
| Age over ~45 (women) or ~50 (men) | In young people with no apparent reason |
Which doctor should you see for pubic hair loss?
The first point of contact for noticeable pubic hair loss is usually a primary care physician, who can order basic lab work. A blood count plus ferritin and TSH values are useful as a starting point; a blood test for hair loss helps narrow down possible causes. If there are skin changes, the next step is a dermatologist; for women with menstrual irregularities, a gynecologist; for men with additional symptoms, a urologist; and if a hormonal disorder is suspected, an endocrinologist.
Common changes in pubic hair
The typical changes in pubic hair with age are thinning, graying and, in rare cases, near-complete loss. The first two are harmless and hormonally driven; complete loss needs an explanation.
| Change | What happens | Assessment |
|---|---|---|
| Thinning | Hair becomes finer and less dense, gaps appear | Most common change, physiological |
| Graying | Melanocytes in the hair root stop producing melanin | Harmless, timing is genetically determined |
| Complete loss | Hair disappears almost entirely | Rare with aging alone, more likely a sign of an underlying condition |
Graying of pubic hair follows the same mechanism as on the scalp: the melanocytes in the hair follicles become exhausted and stop producing pigment (Maturitas 2025). There is no fixed starting point, and there is no evidence that pubic hair grays systematically earlier or later than scalp hair. Near-complete loss is atypical for aging alone and should be assessed by a doctor.
Pubic hair with age: differences between women and men
Pubic hair changes differently in women and men with age, because the hormonal decline follows a different course. In women, estrogen drops relatively abruptly during menopause; in men, testosterone falls slowly over decades. Accordingly, the changes usually set in earlier and more noticeably in women.
| Feature | Women | Men |
|---|---|---|
| Main cause | Estrogen drop in menopause (~51 years) | Gradual testosterone decline from ~35 years |
| Course | Relatively abrupt, then stabilizes | Very gradual over decades |
| Typical onset | Peri- to postmenopause (~45 to 55 years) | Usually later, milder (~50 to 65 years) |
| Pattern | Thinning, can decrease markedly | Finer, less dense, rarely complete |
| Accompanying phenomenon | Facial hair may increase (relative androgen dominance) | — |
In women, a paradoxical pattern emerges: while pubic and underarm hair decreases, facial hair on the chin and upper lip can increase. The reason is relative androgen dominance, because adrenal androgen production is preserved more strongly in menopause than ovarian estrogen production (International Menopause Society 2011). Up to 52 percent of postmenopausal women report noticeable hair thinning, according to Maturitas (2025).
Causes of pubic hair loss
Pubic hair loss can be a harmless hormonal change or a symptom of a condition that needs treatment. The most common cause is the age-related hormonal decline in menopause and andropause. Alongside it, there is a range of causes worth checking, which often reveal themselves through additional symptoms.
Thyroid disorders
Thyroid disorders are an important, treatable cause of diffuse hair loss that can also affect pubic hair. With an underactive thyroid (hypothyroidism), hair loss occurs in about 33 percent of those affected, and with an overactive thyroid in about 50 percent, according to a review in Cureus (2023). Thyroid hormones lengthen the anagen phase directly at the follicle (PubMed 2008). When they are lacking, the hair slips into the resting phase sooner. For more on this, see our article on thyroid hair loss.
Polycystic ovary syndrome (PCOS)
With polycystic ovary syndrome (PCOS), pubic hair loss is atypical; if anything, the opposite occurs. PCOS is primarily linked to hirsutism, that is, increased body hair: about 70 to 80 percent of those affected experience it (ASRM/ACOG). On the scalp, the excess of androgens can cause male-pattern hair loss (PubMed 2022), whereas pubic hair usually stays intact or even increases. So PCOS does not, as a rule, cause pubic hair loss.
Pituitary and adrenal disorders
A complete loss of pubic and underarm hair in women can point to pituitary or adrenal insufficiency. Because women produce a large share of their androgens via the adrenal glands, pituitary insufficiency (for example in Sheehan syndrome) leads to a lack of DHEA production and thus to the loss of this hair (StatPearls/NCBI). Addison’s disease is another example. It is often accompanied by fatigue, weight change or menstrual irregularities. Men are affected less often, because the testes take over androgen production.
Nutrient deficiency (iron, zinc)
A confirmed nutrient deficiency can contribute to diffuse hair loss that may also involve body hair. For iron deficiency, diffuse hair loss (telogen effluvium) is well documented (PubMed 2010); a ferritin level below 30 µg/L is considered a deficiency, and trichologists sometimes discuss higher thresholds. Whether pubic hair specifically is affected has not been studied separately. Important: only supplement iron or zinc when a deficiency has been confirmed. For background, see our article on iron deficiency and hair loss.
Medications
Certain medications can disrupt the hair cycle and thereby thin pubic hair as well. Chemotherapy triggers an anagen effluvium that affects all growing hair, including pubic, underarm and body hair; it usually recovers after 3 to 6 months (PMC 2017). According to the Drug Commission of the German Medical Association (2015), more than 400 substances are known to cause hair loss as a side effect, among them beta blockers, antidepressants, anticoagulants such as heparin and high-dose vitamin A.
Skin conditions: lichen sclerosus
Lichen sclerosus is a chronic inflammatory, scarring skin condition of the anogenital area that causes permanent hair loss. According to the first German S3 guideline (AWMF 013-105, April 2026), it presents with white, parchment-like, hardened skin, itching and scarring. It is not curable, requires ongoing treatment with potent corticosteroids, and raises the risk of squamous cell carcinoma in the affected area. With skin changes like these, prompt dermatological or gynecological evaluation is important.
Alopecia areata, too, can involve pubic hair when it is extensive (alopecia universalis, only 5 to 10 percent of cases) (AWMF S3 guideline 013-104, 2026). Psoriasis, eczema and fungal or bacterial infections can locally damage the hair follicles in the pubic area, especially when they come with inflammation and itching.
Circulation problems and diabetes
Circulation problems can reduce the supply to the hair follicles and promote the loss of body hair. A classic example is leg hair loss in peripheral arterial disease (PAD). However, a study in the Archives of Dermatology (2009) found that leg hair loss is not a reliable predictor of PAD; it is therefore considered only a possible accompanying sign, not proof. In diabetes mellitus, impaired microcirculation can likewise affect hair growth.
Lifestyle and stress
Lifestyle factors, too, can lead to temporary hair loss. Chronic stress raises the telogen rate via cortisol and can trigger telogen effluvium (StatPearls/NCBI). Smoking constricts blood vessels and reduces blood flow to the follicles. Crash diets and one-sided malnutrition can also disrupt the hair cycle. These triggers are usually reversible once the cause is addressed. You will find an overview in our article on the causes of hair loss.
Pregnancy and hormonal shifts after childbirth
The hormonal shift after childbirth can trigger a temporary telogen effluvium that may affect not only scalp hair but also body and pubic hair. After delivery, estrogen levels fall rapidly and many follicles move into the resting phase at the same time (StatPearls/NCBI). This postpartum hair loss is usually reversible and typically resolves on its own within a few months.
Mechanical irritation from waxing and epilating
Repeated mechanical hair removal such as waxing or epilating can irritate the hair follicles in the pubic area and weaken them over the long term. Aggressive methods that pull the hair out by the root place mechanical strain on the follicle. If they repeatedly trigger inflammation or scarring, growth can be permanently impaired. Gentler methods and low-irritation care protect the follicles. With hardened or scarred skin, a dermatological evaluation makes sense.
Preserving pubic hair and preventing changes
You cannot stop the age-related decline of pubic hair, but you can support hair and skin health. A realistic expectation is important: care and nutrition preserve hair quality but do not reverse the hormonally driven decline. Nutrients only help when there is an actual deficiency.
- Care and hygiene: gentle, pH-neutral cleansing (skin in the pubic area sits at pH 4 to 5); avoid aggressive hair-removal methods that damage the follicles mechanically.
- Nutrition: iron- and zinc-rich foods (legumes, pumpkin seeds, nuts), protein and omega-3. Measure first, then supplement in a targeted way.
- Stress reduction: chronic stress raises the telogen rate via cortisol; exercise and relaxation have a stabilizing effect.
- Quitting smoking: improves microcirculation and thus the supply to the hair follicles.
- Nourishing oils: coconut, argan or rosemary oil soothe the skin. Regrowth in hormonally driven loss is not proven by this.
Are there downsides to having less pubic hair? The protective function
Less pubic hair usually has only cosmetic, rarely functional, consequences in daily life. Pubic hair does still serve practical purposes. According to the American College of Obstetricians and Gynecologists (ACOG), it reduces friction between skin and clothing and can protect the sensitive genital skin from microtears. With a marked decline, the skin sometimes reacts more sensitively to friction.
The pubic area is also rich in apocrine sweat glands, which is why there is discussion of whether the hair acts as a diffuser for scent compounds (pheromones). In humans, this function is far less well supported than in the animal kingdom and remains a hypothesis. A health impairment from missing pubic hair alone has not been clinically demonstrated. For sensitive skin, gentler care and less irritating underwear help.
Social and psychological aspects
Changes in pubic hair are a normal part of aging and diminish neither attractiveness nor sexuality, though they can cause insecurity. The key lies in self-acceptance and in the awareness that the topic is usually harmless from a health standpoint. A positive relationship with your own body strengthens self-confidence, precisely because the topic is rarely discussed openly in society.
How pubic hair is perceived varies greatly across cultures and eras. While it was at times seen as a sign of maturity, modern beauty standards often favor smooth skin. Such norms shape your own attitude. In relationships, open communication helps to ease insecurities and build mutual understanding.
Medical and cosmetic options
Treatment options for pubic hair loss depend on the cause and are often limited. Menopausal hormone therapy can stabilize the hormonal situation, but its effect on pubic hair is not proven: the International Menopause Society (2011) found no significant difference in body hair score between women with and without hormone therapy. Any hormone therapy requires a medical indication and a benefit-risk assessment.
Cosmetically, a more even appearance can be achieved in two ways. Laser treatment removes remaining hair permanently, which can be desirable as a way to even out uneven thinning. Micro hair pigmentation creates the visual impression of greater density but is rarely used in the pubic area. Care products and growth serums can support hair structure, but regrowth in hormonally driven loss is not backed by studies.
Hair transplant in the pubic area: only a special case
A hair transplant in the pubic area is only a rare special case, not the remedy for normal age-related thinning. It makes sense exclusively when hair is permanently and locally absent, for example after scarring from lichen sclerosus, a burn or surgery. In that case, donor follicles are harvested by FUE and placed at precise angles using the DHI method (CHOI pen). With diffuse, hormonally driven loss, the follicles are only miniaturized, not destroyed, so a transplant is not an option.
Whether there is in fact a permanent gap, or whether the loss is diffuse and hormonally driven, can be clarified in advance. A free hair analysis assesses the visual pattern of the hair and thereby filters which situation applies. It is a pattern analysis and does not replace a medical blood test, which checks for physical causes such as thyroid issues or iron deficiency.
Discreet and non-binding: a text-based questionnaire, with no photo required. Any uploaded images are reviewed confidentially under GDPR by medical staff only.
Does pubic hair grow back after it falls out?
Whether pubic hair grows back depends entirely on the cause. With reversible triggers such as chemotherapy, corrected iron deficiency, a treated thyroid or resolved stress, it usually grows back. Pubic hair tends to recover faster than scalp hair, because its growth cycle is shorter (StatPearls/NCBI). With age-related miniaturization or scarring, however, regrowth does not occur.
| Timeframe | What happens | Requirement |
|---|---|---|
| Week 1 to 4 | Cause addressed (deficiency corrected, treatment started) | Reversible cause identified |
| Month 1 to 2 | Follicles still in the resting phase, visible shedding may continue | — |
| Month 3 to 4 | Follicles re-enter the growth phase, shedding stops | — |
| Month 4 to 6 | First new, fine hairs visible | — |
| Month 6 to 12 | Cosmetically noticeable density with reversible effluvium | — |
| Irreversible | No regrowth with miniaturization or scarring | — |
Frequently asked questions about pubic hair loss
Is it normal for pubic hair to thin with age?
Yes, this is physiologically normal. As estrogen or testosterone levels drop with age (from around 40 to 50), pubic hair gradually becomes thinner. It is androgen-dependent and reacts sensitively to the hormonal decline.
At what age does pubic hair start to change?
In women often from perimenopause (about 45 to 52 years), in men usually later and more mildly (about 50 to 65 years). Genetics play a part in whether someone notices changes earlier or later.
Does pubic hair grow back after it falls out?
That depends on the cause. After chemotherapy, or with a treated iron deficiency or thyroid problem, usually yes, within about 4 to 12 months. With age-related hormonal thinning or scarring (for example from lichen sclerosus), not fully.
When is pubic hair loss a warning sign?
When the loss appears suddenly within weeks, in patches or on one side, is accompanied by itching, redness or white hardened skin, or comes together with fatigue, menstrual irregularities and weight change, as well as in young people with no apparent trigger. In those cases, a medical evaluation is advisable.
Which conditions cause pubic hair loss?
Above all an underactive thyroid, pituitary insufficiency, Addison’s disease, lichen sclerosus (scarring) and, in rare cases, alopecia universalis, as well as pronounced iron or zinc deficiency. Diabetes and circulation problems can reduce body hair in general.
Does pubic hair go gray with age?
Yes. It is the same mechanism as with scalp hair: the melanocytes in the hair follicles stop producing melanin over time. When this begins is genetically determined.
Can pubic hair be transplanted?
In principle yes, but only as a rare special case for permanent, locally limited loss, for example after scarring. For age-related diffuse thinning, a hair transplant is not advisable, because the follicles are only miniaturized and not destroyed.
Which doctor should you see for sudden pubic hair loss?
First a primary care physician for basic lab work (ferritin, TSH, hormone status). Women with menstrual irregularities should see a gynecologist, those with skin changes a dermatologist, and if a hormonal or thyroid disorder is suspected, an endocrinologist.
Conclusion: understand a natural change and act with purpose
In most cases, pubic hair loss is a normal, hormonally driven part of getting older. Thinner hair, graying and slower growth are harmless. What matters is the two-track message: what proceeds slowly and evenly is part of aging; what appears suddenly, on one side, or with skin changes and accompanying symptoms should be checked by a doctor.
With good care, a nutrient-rich diet and a mindful approach to stress, you support your hair health without having to reverse the hormonal decline. When in doubt, it is worth seeing the right specialist. Last updated: 2026.
Sources
- S3 guideline on lichen sclerosus, AWMF reg. no. 013-105, April 2026 — PMC
- Menopause and hair loss in women: Exploring the hormonal transition, Maturitas 2025 — PubMed
- Age-related testosterone decline: mechanisms and intervention strategies, PMC 2024 — PMC
- Impact of Thyroid Dysfunction on Hair Disorders, Cureus 2023 — PMC
- Physiological changes in scalp, facial and body hair after the menopause, International Menopause Society 2011 — IMS
- Iron deficiency in female pattern hair loss and chronic telogen effluvium, PubMed 2010 — PubMed
- Telogen Effluvium, StatPearls / NCBI Bookshelf — NCBI
- Hair loss in practice, Drug Commission of the German Medical Association (AkdÄ) 2015 — AkdÄ
This article is for general information and is not a substitute for a medical diagnosis or treatment. For persistent or sudden symptoms, please consult a doctor.
Dr. Imad Moustafa
Hair transplant specialist