Hair is not just an aesthetic feature — it is also a reflection of overall health. Although losing around 50–100 hairs per day is considered normal, excessive shedding, thinning, or bald patches should never be ignored. In this article, we will explore the key causes of hair loss — from hormonal imbalances and chronic stress to genetic predisposition — and explain why only a professional trichological consultation can provide real, targeted support.
1. The Hair Growth Cycle — Understanding the Basics
Hair grows in a natural cycle consisting of three main phases:
- Anagen (growth phase) – lasts from 2 to even 6 years.
- Catagen (transition phase) – a short phase where growth stops.
- Telogen (resting phase) – the hair falls out and is replaced by a new one.
When this balance is disrupted, more hairs enter the resting phase prematurely, leading to noticeable thinning or excessive shedding.
2. Hormones — The Key Regulators of Hair Growth
It is often said that hair reflects hormonal balance — and that is scientifically accurate. The endocrine system plays a crucial role in regulating the hair cycle in both women and men.
Androgens (DHT and Testosterone) — A Major Cause of Pattern Hair Loss
In both men and women, androgens are among the most common causes of androgenetic alopecia.
Dihydrotestosterone (DHT), a derivative of testosterone, binds to receptors in hair follicles and causes follicular miniaturization. Over time:
- hair becomes thinner,
- growth phases shorten,
- follicles shrink,
- and eventually stop producing visible hair.
In men, this typically results in receding hairlines and crown thinning. In women, it often presents as diffuse thinning along the central scalp.
Women with conditions such as Polycystic Ovary Syndrome (PCOS) may experience elevated androgen levels, which can intensify hair thinning.
Other Hormones Affecting Hair Health
Beyond androgens, several other hormones significantly impact hair condition:
- Cortisol (the stress hormone) can disrupt the growth cycle and trigger telogen effluvium.
- Thyroid hormones — both hypothyroidism and hyperthyroidism can cause hair fragility and shedding.
- Estrogen — levels drop after childbirth and during menopause, often leading to increased hair loss.
Hormonal balance is therefore one of the most critical aspects of maintaining healthy hair.
3. Stress — The Invisible Enemy of Your Hair
Stress is not merely emotional tension — it is a biological response that directly affects hair follicles.
How Does Stress Cause Hair Loss?
Chronic stress elevates cortisol and inflammatory mediators in the body. This can:
- shorten the growth phase,
- push more follicles into the resting phase,
- increase shedding several weeks or months after a stressful event.
Importantly, stress-related hair loss is often delayed. Many individuals notice increased shedding 2–3 months after illness, trauma, or prolonged emotional strain.
4. Genetics — The Blueprint of Your Scalp
Genetics is one of the strongest and most permanent factors influencing hair growth.
Hereditary Pattern Hair Loss
Androgenetic alopecia is strongly influenced by inherited genes from both maternal and paternal sides.
Genetics determines:
- follicle sensitivity to DHT,
- duration of the growth phase,
- likelihood of follicle miniaturization over time.
While genetics cannot be changed, early intervention can significantly slow progression and improve hair density.
5. Other Health-Related Causes of Hair Loss
Hormones, stress, and genetics are major factors — but not the only ones. Other contributors include:
- Nutritional deficiencies (iron, zinc, biotin, protein, vitamin D),
- Scalp disorders (e.g., seborrheic dermatitis),
- Medications and medical treatments,
- Poor lifestyle habits (sleep deprivation, smoking, extreme dieting),
- Aggressive cosmetic treatments (tight hairstyles, bleaching, extensions).
Hair loss is often multifactorial — meaning several causes may coexist.
6. What Can You Do Today? Practical Steps
While not all factors can be eliminated, you can support healthy hair growth by:
- Maintaining a balanced, protein-rich diet,
- Ensuring adequate micronutrient intake,
- Managing stress through physical activity and relaxation techniques,
- Sleeping 7–9 hours per night,
- Monitoring hormonal health if symptoms appear.
However, self-diagnosis is rarely sufficient.
7. Why You Should Consider a Trichological Consultation
Hair loss is a complex issue that requires specialized evaluation.
A trichologist is a professional specializing in scalp and hair disorders. During a consultation, a trichologist can:
- analyze the hair growth cycle,
- assess scalp condition,
- review medical and hormonal history,
- recommend laboratory testing if needed,
- develop an individualized treatment and care plan.
Early diagnosis significantly improves treatment outcomes.
Final Thoughts
Hair loss may result from:
- hormonal imbalances,
- chronic stress,
- genetic predisposition,
- nutritional deficiencies,
- underlying medical conditions.
Although lifestyle adjustments can help, only a professional trichological consultation can identify the true cause and provide targeted support.
Your hair reflects your internal health.
Do not ignore the signals your scalp is sending.
If you are struggling with hair thinning or excessive shedding, consider scheduling a consultation with a qualified trichologist — because only a trichologist can effectively guide you in managing hair growth disorders and restoring scalp balance.