Understanding Dihydrotestosterone

DHT

To prevent the most common types of hair loss you need to understand the role of dihydrotestosterone (DHT). DHT, a hormone, is produced when an enzyme in the body called type II 5-alpha reductase converts the male hormone testosterone into dihydrotestosterone or DHT. High concentrations of DHT can result from high enzymes levels and/or high testosterone levels.

High DHT levels disrupt the normal three-stage hair growth cycle by keeping follicles in the resting or telogen phase. It’s this break in the cycle that causes the follicle to wither resulting in excessive hair loss. However, not all hairs on the body are affected by this process. Hairs on the side of the head are less vulnerable and more resistant than those on the top. This relates directly to the genetic differences between these follicles from birth.

It's the knowledge of the role of DHT that has resulted in the creation of DHT blockers and their proven effectiveness in preventing hair loss. Hair loss drugs like Minoxidil (Rogaine) and Finasteride (Proscar or Propecia) intervene in the process by either counteracting the symptoms (increasing blood flow to the hair follicle), or directly inhibiting the production of DHT.

Keep in mind that answers are never simple and the solution to a problem is often multifaceted. Managing stress in your life is also important, whether it’s mental, physical, or emotional. Stress has a direct impact on hormone levels in the body and any attempt to moderate those levels will have a positive influence on your body. Menopause and childbirth are two examples where hormone changes have been associated with hair loss.