DHT and Hair Loss: What Every Man Should Know

Written by Kristy Beard, MSN, APRN, FNP-C — Board-Certified Family Nurse Practitioner and Founder of Elevate Health and Wellness, serving patients across the Gulf Coast in Gautier, MS and Foley, AL.

The Most Common Cause of Male Hair Loss

Androgenic alopecia — commonly called male pattern baldness — affects approximately 50% of men by age 50 and up to 80% of men by age 70, according to the American Academy of Dermatology. Despite its prevalence, it is frequently dismissed as an inevitable consequence of aging rather than a hormonal process with clinical underpinnings that can be evaluated and addressed. Understanding the biology of androgenic alopecia is the first step toward managing it effectively.

What Is DHT and How Does It Cause Hair Loss?

Dihydrotestosterone (DHT) is a potent androgen produced when the enzyme 5-alpha reductase converts testosterone into DHT — primarily in the prostate, skin, and hair follicles. DHT binds to androgen receptors in genetically susceptible hair follicles and progressively miniaturizes them — reducing the diameter and pigmentation of the hair shaft, shortening the growth phase of the follicle, and eventually causing the follicle to become dormant. This process is called follicular miniaturization, and it is the defining mechanism of androgenic alopecia.

Why Some Men Are More Susceptible

The key variable in androgenic alopecia is not simply how much DHT a man produces — it is how sensitive his hair follicles are to DHT. This sensitivity is genetically determined. Men with high follicular androgen receptor sensitivity will experience significant hair loss even with average DHT levels, while men with low receptor sensitivity may maintain their hair despite elevated DHT. This is why hair loss patterns and severity vary so dramatically between men with similar hormone profiles.

What Lab Testing at Elevate Can Show

At Elevate Health and Wellness, Kristy Beard, MSN, APRN, FNP-C evaluates men experiencing hair loss with a comprehensive hair loss panel that may include total and free testosterone, DHT levels, SHBG, thyroid function (because hypothyroidism is an independent and treatable cause of hair loss), ferritin and iron studies (because iron deficiency produces diffuse hair shedding in both men and women), zinc levels, and a complete metabolic panel. Identifying and treating modifiable contributors — particularly thyroid dysfunction, nutritional deficiencies, and hormonal imbalances — can meaningfully slow or stabilize hair loss even when genetic susceptibility is present.

Concerned about hair loss? Visit our Men's Health and Hormones page to schedule your evaluation at Elevate.

Sources: American Academy of Dermatology. Androgenetic Alopecia. aad.org. | Journal of Clinical Endocrinology. DHT and Hair Follicle Biology. academic.oup.com.

This article is written by Kristy Beard, MSN, APRN, FNP-C, board-certified Family Nurse Practitioner and founder of Elevate Health and Wellness. Information provided is for educational purposes only and does not constitute medical advice. Please consult a licensed healthcare provider for personalized care.