Hair Loss Science: DHT, AGA & Follicle Miniaturization
Reviewed by [Reviewer Name, MD] | Last reviewed: August 2026 | Editorial policy
Understanding the biology of androgenetic alopecia helps you make informed decisions about treatment. This section covers the mechanisms behind hair loss — how DHT drives miniaturization, how pattern baldness progresses, and what the hair cycle means for treatment timing.
Hair Science Articles
- DHT and hair loss — How dihydrotestosterone drives follicle miniaturization in AGA
- Norwood scale — Stages I–VII of male AGA; what each stage looks like and means for treatment
- Shedding vs. hair loss — Normal shedding vs. true AGA miniaturization; why the distinction matters on finasteride
Related: How finasteride works | What is finasteride | Finasteride for AGA