Express: Free Androgen Index and Its Relation With Female Pattern Hair Loss

A 25-year-old male experienced significant hair loss due to telogen effluvium and androgenetic alopecia. He began using finasteride, minoxidil, and vitamins, seeing some regrowth but remains worried about hair density.

The user received hormone test results showing normal estradiol and testosterone levels, low SHBG, and normal free androgen index. They are considering starting finasteride but are concerned due to being slightly overweight.

The conversation is about someone planning to start finasteride or RU58841 for hair loss and wanting to know which hormones to test beforehand. They found a package for testing testosterone, free testosterone, estradiol, and DHT, and are asking if these tests are enough.

Testosterone within the normal range does not significantly contribute to male pattern baldness (MPB); DHT is the main factor that can be controlled. Genetics play a crucial role in hair loss, and treatments like finasteride and dutasteride, which block DHT, can help despite potentially raising testosterone levels.

Hair loss is linked to cellular physiology and the IGF-1 to TGF-B1 ratio, not just androgen sensitivity. The theory lacks evidence, while finasteride and minoxidil are effective treatments.

The user experienced hair shedding after starting testosterone replacement therapy (TRT) and is considering using DHT blockers like finasteride or dutasteride to address potential DHT-related hair loss. Low ferritin levels due to frequent blood donations may also contribute to hair issues, and the user is working on stabilizing iron levels.