Causes of Male Pattern Hair Loss
Jul 07, 2021
Source: Cainiu Health
Dr. Li Ruizhi
Introduction
1. Genetic factors: If one or both parents exhibit hair loss, their offspring are likely to inherit the “hair loss gene.”
2. Androgens: In males, elevated levels of androgens (male hormones) are the primary cause of M-shaped hair loss.
3. Psychological stress: Prolonged exposure to severe stress or depression.
4. Frequent late-night activity: Irregular sleep patterns may contribute to hair shedding.
M-shaped hair loss typically begins during puberty or shortly thereafter. Initially, hair thinning occurs at the crown (top center of the scalp), and hair along the temples (frontal hairline) gradually becomes finer, softer, and sparser. As the condition progresses, the scalp at the crown becomes increasingly smooth, the forehead appears higher, and the overall hairline takes on an “M” shape—hence the term “M-shaped hair loss.” So, what causes M-shaped hair loss? Below, we address this question.
Causes of M-Shaped Hair Loss
1. Genetic Factors
If one or both parents experience hair loss, their offspring are likely to inherit the “hair-loss gene.” This situation can be challenging, as congenital (hereditary) hair loss is generally difficult to cure completely. However, medical treatment—including pharmacotherapy—can effectively slow progression and alleviate symptoms.
2. Androgens (Male Hormones)
In men, elevated androgen levels—particularly testosterone—are a primary cause of M-shaped hair loss. Excess testosterone is converted in the scalp into dihydrotestosterone (DHT), which shrinks hair follicles and triggers hair shedding. Therefore, anti-androgen medications are often prescribed to inhibit this process.
3. Psychological Stress
Stress-induced hair loss is usually temporary and may reverse spontaneously once stress levels decrease and emotional well-being improves. However, chronic, severe stress or prolonged depression may lead to permanent hair loss or other serious complications—making stress management essential.
4. Chronic Sleep Deprivation
Many people today habitually use smartphones right up until bedtime, resulting in delayed sleep onset and irregular sleep patterns. Such chronic sleep deprivation can contribute to hair shedding. To safeguard your health, it’s vital to avoid late-night activities and ensure adequate, restorative sleep.
The above outlines the main causes of M-shaped hair loss. We hope this information proves helpful to you.
