Definition
What is Male pattern hair loss?
Male pattern hair loss, medically called androgenetic alopecia, is the most common cause of permanent hair loss in men. The two parts of its name sum it up: «andro» points to male hormones, and «genetic» to the predisposition you inherited from your family. The problem is not too much hormone; in most men, blood testosterone levels are normal. What matters is how sensitive your hair follicles are to DHT (dihydrotestosterone), a more potent derivative of that hormone.
Follicles that are sensitive to DHT shrink a little more with every hair cycle. Doctors call this miniaturization: thick, dark, long-lived hairs are gradually replaced by thinner, lighter and shorter-lived ones. Past a certain point, the follicle produces only fine vellus hair, or nothing at all. That is why hair loss doesn't feel like a sudden «snap» but like thinning spread over years. The hairline pulls back from the temples, a round bald spot appears on the crown (vertex), while the hair on the back and sides of the head usually stays put because it is resistant to DHT.
The degree of hair loss is described with the Hamilton-Norwood scale: in stage 1 the hairline is almost intact, in stages 2-3 the temples recede noticeably, in stages 4-5 the crown and front areas start to merge, and in stages 6-7 only a horseshoe of hair remains at the sides and back. Studies in Turkey show this type of hair loss is about as common there as in European populations, so you're not alone. The good news: because the process is slow, a dermatological plan started early catches the most valuable window for keeping the hair you have and strengthening thinned strands.
Check yourself
How do you spot it?
- ✓An M-shaped recession that becomes more obvious at the temples
- ✓The hairline pulling back from the middle of the forehead
- ✓A round, gradually widening thin spot on the crown (vertex)
- ✓Hairs becoming thinner and shorter and no longer giving the same volume
- ✓Scalp showing through more easily when hair is wet or under overhead light
- ✓Not being able to grow your hair as long as before; ends staying weak and sparse
- ✓A forehead that looks wider in photos year after year
- ✓Hair on the back and sides of the head keeping its density
Why it happens
Main causes
01
Genetic predisposition
Male pattern hair loss isn't determined by a single gene but by the combined effect of many gene regions. Studies using large genetic datasets show that genetic scores can, to some extent, predict who will experience more pronounced hair loss. Because the predisposition can come from both your mother's and your father's side, the idea that «baldness comes from your mother» is only half true.
02
DHT-sensitive hair follicles
In the skin, testosterone is converted to DHT by an enzyme called 5-alpha reductase. In genetically sensitive follicles, DHT shortens the growth phase of the hair cycle and makes the follicle a little smaller with each cycle. The front and crown are the areas where this sensitivity is highest.
03
Age
The frequency and severity of hair loss increase with age. In a hospital study in Turkey, too, the prevalence and degree of androgenetic alopecia were clearly linked to age. In some men the process begins after puberty, in their early 20s.
04
A shorter hair cycle
A healthy hair stays in the growth phase for years. In sensitive follicles this phase gets shorter and the resting phase gets longer. As a result, fewer hairs are growing at any one time, and a larger share of hairs fall out and are replaced by thinner ones.
05
Contributing factors
Smoking, intense and prolonged stress, poor nutrition, rapid weight loss and thyroid problems don't start male pattern hair loss on their own; but they can add a layer of diffuse shedding that worsens the picture and makes the process seem to progress faster than it really is.
06
Certain drugs and supplements
Anabolic steroids and testosterone-containing products used without medical supervision to build muscle can increase the androgen load and speed up hair loss in predisposed men. These products, often recommended at the gym for «fast results», are a serious risk for your hair follicles.
In daily life
Triggers that cause flare-ups
Medical approach
Treatment options
01
Start with the right diagnosis
Not all hair loss is male pattern. Your dermatologist can examine your scalp with a magnifying device called a trichoscope to reveal miniaturization, and if needed check iron, thyroid and vitamin levels to tell whether diffuse shedding is also involved. The right diagnosis keeps you from wasting money and time on the wrong product.
02
Topical solutions that support hair growth
Solutions and foams applied to the scalp that help extend the growth phase are among the most studied options for male pattern hair loss. Effects usually start to show in 3-6 months; when you stop using them, the hair gained may be lost over time. Your dermatologist decides how often to apply them and which form to use.
03
Oral medications that reduce DHT
A group of drugs called 5-alpha reductase inhibitors reduces the conversion of testosterone to DHT. Network meta-analyses show that this group and topical solutions are effective options for increasing hair count in male pattern hair loss, with different doses and forms giving different results. These drugs are started only after a doctor's assessment and a conversation about possible side effects; never use them based on the internet or a friend's advice.
04
Supportive procedures
Low-level laser/light devices, platelet-rich plasma prepared from your own blood, and microneedling may be recommended for some men in addition to the main treatment. The level of evidence varies from method to method; your dermatologist will judge which one fits your situation.
05
Hair transplant
DHT-resistant follicles from the back of the head are moved to thinning areas. A hair transplant can offer a lasting result, but hair loss continues in the areas that weren't transplanted. That's why a plan to protect your existing hair before and after the transplant is essential. Make the decision by weighing both how fast your hair loss is progressing and the capacity of your donor area.
06
Consistency and follow-up
Male pattern hair loss is a chronic process. Whatever method you choose, judging the result takes at least 6 months, ideally 12 months, of regular use and tracking with photos taken in the same light. Any plan you quit too soon will look like it failed.
Did you know? · Male pattern hair loss
47.6% · In a community study in Tokat, Turkey, where 1,034 men aged 20 and over were examined by dermatologists, androgenetic alopecia was found in 47.6% of the men.
Step by step
Care routine for Male pattern hair loss
4 steps
- 01
Wash if needed
If your scalp gets oily or you worked out in the morning, wash with lukewarm water and a gentle shampoo. Washing often doesn't cause hair loss; an oily, dirty scalp, on the other hand, can increase itching and inflammation.
- 02
Your doctor's topical product
If your dermatologist recommended a solution or foam, apply it to a dry scalp in the amount prescribed. Spread the product directly on the scalp, not on the hair.
- 03
Light styling
Choose light, water-soluble stylers instead of heavy waxes and stiff gels. Pulling fine hair back tightly makes the recession at your temples look even more obvious.
- 04
Sun protection for your scalp
Thinned areas burn easily in the sun. If you'll be outside for a long time, wear a hat or use a spray sunscreen suitable for the scalp.
Caution
What to avoid, and when to see a doctor?
Avoid these
- ✕Products with unclear ingredients that promise to «regrow hair in 7 days»
- ✕Using prescription drugs without medical supervision or changing the dose on your own
- ✕Anabolic steroids or testosterone-containing supplements for building muscle
- ✕Mixtures of garlic, onion, alcohol or hot pepper that burn the scalp
- ✕Pulling your hair back tightly every day and using heavy wax
- ✕Quitting treatment after just 1-2 months because you «didn't see results»
- ✕Crash diets and protein-poor eating
- ✕Deciding on a hair transplant based only on ads and discount prices
See a dermatologist
- →If your hair loss started quickly in your 20s
- →If shedding has increased noticeably within a few months
- →If you have round bald patches with sharp borders
- →If itching, redness, flaking or pain on the scalp come with it
- →If you've noticed hair loss in your eyebrows, beard or body hair too
- →If you have other complaints such as fatigue, weight change or palpitations
- →If hair loss increased after starting a medication
- →If you're considering a hair transplant and don't know how to protect the hair you have
Common misconceptions
Myth or fact?
✕Common belief
Wearing hats and beanies causes baldness.
✓Fact
Male pattern hair loss is about genetics and DHT; a clean hat or beanie doesn't suffocate your hair follicles. What to watch out for is wearing a sweaty, dirty cap for long periods and irritating your scalp.
✕Common belief
Washing your hair often makes it fall out.
✓Fact
The hairs that come out in the shower have already finished their resting phase; they would have fallen out within a few days even if you didn't wash. Regular, gentle washing clears oil and flakes from the scalp and creates a healthier environment.
✕Common belief
Baldness is passed down only from your mother's side.
✓Fact
Some genes linked to male pattern hair loss are on the X chromosome you get from your mother, but many gene regions can also come from your father's side. Your father's and mother's families should be considered together.
Popular searches
Most asked about Male pattern hair loss
Your questions
Frequently asked questions
01Can male pattern hair loss be stopped?+
Genetic predisposition can't be changed, but dermatological options can significantly slow the pace of hair loss and help some thinned hairs grow stronger again. The best results come from plans started early, before follicles have shut down completely, and kept up consistently.
02At what age does it start?+
It can start at any age after puberty. Some men notice the first recession between 18 and 25; in many, it becomes obvious in their 30s and 40s. Hair loss that starts early usually progresses faster, so an early assessment is important.
03How can I tell normal shedding from male pattern hair loss?+
Losing 50-100 hairs a day is normal. In male pattern hair loss, the real sign is less about how many hairs fall out and more about thinning in specific areas, namely the temples and crown. If your hair is suddenly falling out heavily all over, it may point to another condition such as telogen effluvium.
04What happens if I stop treatment?+
Treatments for male pattern hair loss keep the process under control. When you stop, the hair you gained starts to disappear within a few months and the process picks up where it left off. That's why it's worth making a long-term plan before you start.
05If I get a hair transplant, will I still need medication?+
Transplanted follicles are generally resistant to DHT, but your own hair in non-transplanted areas will keep thinning. Many dermatologists and hair surgeons recommend a care plan after the transplant to protect existing hair. You should discuss this with your doctor before the procedure.
06What kind of doctor should I see for hair loss?+
For hair loss you should see a dermatologist (skin specialist). Your dermatologist determines the type of hair loss, orders blood tests if needed and plans options that suit you. If you're considering a hair transplant, that decision should also come after this assessment.
Scientific basis
Sources
- 01Prevalence and types of androgenetic alopecia in north Anatolian population: A community-based study
Bas Y, Seckin HY, Kalkan G, Takci Z, Citil R, Önder Y, Sahin S, Demir AK · Journal of the Pakistan Medical Association · 2015
In a community screening of 2,322 people in Tokat, androgenetic alopecia was found in 47.6% of men, and its prevalence was similar to that in European populations.
- 02Frequency, severity and related factors of androgenetic alopecia in dermatology outpatient clinic: hospital-based cross-sectional study in Turkey
Salman KE, Altunay IK, Kucukunal NA, Cerman AA · Anais Brasileiros de Dermatologia · 2017 · doi:10.1590/abd1806-4841.20175241
Androgenetic alopecia was found in 67.1% of 419 men attending a dermatology clinic in Istanbul; frequency and severity increased with age.
- 03Androgenetic alopecia: a review
Lolli F, Pallotti F, Rossi A, Fortuna MC, Caro G, Lenzi A, Sansone A, Lombardo F · Endocrine · 2017 · doi:10.1007/s12020-017-1280-y
Summarized androgenetic alopecia as a process driven by genetic predisposition and the effect of androgens on the hair follicle, in which the follicle gradually shrinks.
- 04Androgenetic Alopecia: An Update of Treatment Options
Kelly Y, Blanco A, Tosti A · Drugs · 2016 · doi:10.1007/s40265-016-0629-5
Reviewed approved treatments for male pattern hair loss alongside options such as light therapy, plasma treatments and hair transplantation, together with their levels of evidence.
- 05Relative Efficacy of Minoxidil and the 5-α Reductase Inhibitors in Androgenetic Alopecia Treatment of Male Patients: A Network Meta-analysis
Gupta AK, Venkataraman M, Talukder M, Bamimore MA · JAMA Dermatology · 2022 · doi:10.1001/jamadermatol.2021.5743
A network meta-analysis of studies in male patients showed that different doses and forms of topical solutions and DHT-reducing drugs increased hair count to different degrees.
- 06Genetic prediction of male pattern baldness based on large independent datasets
Chen Y, Hysi P, Maj C, Heilmann-Heimbach S, Spector TD, Liu F, Kayser M · European Journal of Human Genetics · 2023 · doi:10.1038/s41431-022-01201-y
Models built on genetic data from more than a hundred thousand men showed that male pattern hair loss can be genetically predicted to some extent.
- 07Male pattern baldness: classification and incidence
Norwood OT · Southern Medical Journal · 1975 · doi:10.1097/00007611-197511000-00009
Defined the Hamilton-Norwood staging still used today and classified how male pattern hair loss progresses with age.
- 08Microbiome in the hair follicle of androgenetic alopecia patients
Ho BS, Ho EXP, Chu CW, Ramasamy S, Bigliardi-Qi M, de Sessions PF, Bigliardi PL · PLoS One · 2019 · doi:10.1371/journal.pone.0216330
Showed that an acne-associated bacterium increased in miniaturized hair follicles on the crown and that this may be linked to the immune response in the follicle.
- 09Hair loss
NHS · NHS (National Health Service) · 2023
Explained that male pattern hair loss runs in families, usually starts at the temples and crown, and when to see a doctor.
