DHT blockers, testosterone & the relationship with hair loss | Parsa Mohebi, MD

Summary

In this brief presentation from the International Society of Hair Restoration Surgery, Dr. Parsa Mohebi reviews the biological link between DHT, testosterone, and male pattern hair loss. He describes how the enzyme 5‑alpha‑reductase converts testosterone to DHT in the scalp, leading to miniaturization of hair follicles in genetically susceptible individuals. The discussion then turns to pharmacologic DHT blockers such as finasteride and dutasteride, outlining their mechanism of action, typical dosing, and the evidence supporting their use for slowing or reversing hair loss. Dr. Mohebi also addresses common concerns about the impact of these drugs on systemic testosterone levels, noting that while they reduce scalp DHT, overall testosterone concentrations usually remain within normal ranges and any hormonal changes are generally mild. The video concludes by emphasizing the importance of individualized assessment and consultation with a qualified hair‑restoration specialist before initiating any treatment.

Key Takeaways

• ✓DHT is a potent androgen derived from testosterone that plays a central role in androgenetic alopecia.
• ✓5‑alpha‑reductase inhibitors lower scalp DHT and can help preserve or regrow hair in many men.
• ✓Systemic testosterone levels are typically unchanged by DHT blockers, though individual responses vary.
• ✓Potential side effects should be discussed with a healthcare provider before starting medication.
• ✓A personalized evaluation by a hair‑loss specialist is recommended to determine the most appropriate approach.

What to Be Careful About

• ⚠Information provided is for educational purposes only and does not constitute medical advice.
• ⚠Individuals should consult a qualified physician before using any DHT‑blocking medication.

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