"So I am going bald because I have a lot of testosterone?" I get that question often, usually with a mix of pride and worry. The answer disappoints many men: that is not how it works. Hereditary hair loss is not about how much testosterone you have, but about how sensitive your hair follicles are to DHT, a powerful form of testosterone.
Blunt but true: you can have modest testosterone and still go bald, while another man with high values keeps a full head of hair. Genetics and sensitivity decide it, not your "manliness".
How does DHT cause hair loss?
DHT is formed from testosterone via the enzyme 5-alpha-reductase. With hereditary sensitivity, the follicles on the crown and at the temples respond to DHT by shortening their growth cycle. The hair becomes finer and shorter, until it eventually stops growing. The typical pattern, often starting at the temples and crown, is recognisable and is part of what doctors call androgenetic alopecia.
Why one man and not another? That is largely down to your genes, and not only your mother's side, as the persistent story goes. You inherit DHT sensitivity from both sides of the family. If your father, uncles and grandfathers have the same pattern, the chance that you develop it too is higher. That is no reason for fatalism, but useful to know if you spot the first signs early.
Which type of hair loss do you have?
| Pattern | What it may be | What to do |
|---|---|---|
| Gradual, temples and crown | Fits hereditary (DHT) hair loss | Pattern recognition; a blood test rules out other causes |
| Diffuse, across the whole scalp | May relate to deficiency, thyroid or stress | Have thyroid, iron and vitamins measured |
| Sudden or in patches | Does not fit the hereditary pattern | See your doctor or a dermatologist |
| With itching, flaking or pain | May point to a skin condition | Have the scalp assessed |
Why timing is everything
With hereditary hair loss: the sooner you know what is going on, the more options you have. Follicles that have been inactive for a long time usually do not come back, while follicles still making finer hair can often still be influenced. That explains why the same approach has more effect in one man than another: the difference lies mainly in how far the process has already progressed. Waiting until you are noticeably bald and only then wanting to act is exactly the order that yields the least.
Can you see hair loss in your blood?
Not directly. Hereditary hair loss is mainly established by the pattern and your family history, not by a number. A blood test can show your testosterone and DHT, and is most useful for ruling out other causes. For diffuse hair loss the NHG names thyroid problems, iron deficiency and other deficiencies among the possible factors, so when in doubt also have your TSH, ferritin and vitamin D checked. A normal testosterone therefore does not rule out hereditary hair loss, and high testosterone is not a cause of it. It is about the sensitivity of your follicles, not the level in your blood.
What helps and what does not?
The internet is full of shampoos, oils and supplements that supposedly stop baldness. Be level-headed about that: most of them have little to no proven effect on hereditary hair loss. The treatments that do act on the DHT pathway or the blood supply to the scalp require a considered decision with a doctor, because they take time, only work while you use them and can cause side effects. My advice: do not let promises rattle you, and discuss the realistic options with your doctor or a dermatologist before spending money on something without evidence.
What can you do about it?
Discuss persistent or rapid hair loss with your doctor or a dermatologist. Proven treatments for hereditary hair loss act on the DHT pathway, but that is something to align with a doctor, because there are pros and cons. Bear in mind that results take time, often months, and that hair sometimes temporarily sheds more at the start before it improves. That is normal and no reason to stop immediately, but worth knowing in advance so it does not alarm you. The Health Council of the Netherlands (Gezondheidsraad) and the NHG stress that treatment choices for such complaints should always be made in consultation, tailored to your situation. Also see gynecomastia and too much estrogen in men, and the pillar men's hormonal health.
Getting started
The Testosterone Panel shows your testosterone; the broader Hormones Man panel looks further and is handy for ruling out other causes. A blood test is a tool, not a diagnosis in itself; discuss your result with your doctor.
الكاتب
Caliberhealth
Dr. Naimi، طبيب مسجل في سجل BIG الهولندي، يشرف على المعايير الطبية لمحتوانا وتقييماتنا. اقرأ سياستنا الطبية
