Male Pattern Hair Loss: What Causes It and What Works
Male pattern hair loss (androgenetic alopecia) affects roughly 50% of men by age 50 and up to 70% by age 70. It's the most common form of hair loss — and one of the most treatable, especially when addressed early.
Male pattern hair loss (androgenetic alopecia) affects roughly 50% of men by age 50 and up to 70% by age 70. It's the most common form of hair loss — and one of the most treatable, especially when addressed early.
What causes it?
Male pattern hair loss is driven by dihydrotestosterone (DHT), a potent derivative of testosterone. DHT binds to receptors in genetically susceptible follicles, causing them to miniaturize — producing progressively finer, shorter hairs until the follicle becomes dormant.
Proven treatments
Finasteride (oral) and dutasteride reduce DHT production — the most effective medical treatment for slowing and reversing male pattern hair loss. Minoxidil (topical or oral) increases blood flow to follicles and prolongs the growth phase. Used together, the combination is more effective than either alone.
What to expect
Hair loss treatments take 6–12 months to show meaningful results. Most people see stabilization within 3 months and regrowth over the following 6–12 months. Treatments must be maintained continuously.
Side effects to know about
Finasteride and dutasteride carry a risk of sexual side effects in a small percentage of men. These effects are usually reversible on discontinuation. A full health history review is essential before starting.
This content is educational and does not constitute medical advice.
Quick answers
- What causes it?
- Male pattern hair loss is driven by dihydrotestosterone (DHT), a potent derivative of testosterone. DHT binds to receptors in genetically susceptible follicles, causing them to miniaturize — producing progressively finer, shorter hairs until the follicle becomes dormant.
- Proven treatments
- Finasteride (oral) and dutasteride reduce DHT production — the most effective medical treatment for slowing and reversing male pattern hair loss. Minoxidil (topical or oral) increases blood flow to follicles and prolongs the growth phase. Used together, the combination is more effective than either alone.
- What to expect
- Hair loss treatments take 6–12 months to show meaningful results. Most people see stabilization within 3 months and regrowth over the following 6–12 months. Treatments must be maintained continuously.
- Side effects to know about
- Finasteride and dutasteride carry a risk of sexual side effects in a small percentage of men. These effects are usually reversible on discontinuation. A full health history review is essential before starting. This content is educational and does not constitute medical advice.
Medical disclaimer: This article is for educational purposes only and does not constitute medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before starting any new treatment or making changes to your current care.