Clinical and Hormonal Effects of the 5 Alpha-Reductase Inhibitor Finasteride in Idiopathic Hirsutism

Finasteride not only inactivates the 5a reductase enzyme but also affects the 5b reductase enzyme in a dose-dependent manner, which can impact sexual behavior and brain activity. The user experienced significant hair regrowth and side effects on 1mg of finasteride, which diminished after reducing the dose to 0.5mg, leading to no side effects and further hair improvement.

A 21-year-old experienced hormone changes after using self-made topical finasteride for hair loss, including a 20% decrease in DHT, a 47% increase in testosterone, and a 39% increase in estradiol. The user previously used minoxidil and microneedling but is now seeking ways to balance hormones, possibly through supplements or dosage adjustments.

A user's experience with using 5AR inhibitors (Finasteride and Dutasteride) in combination with Minoxidil foam and microneedling, which resulted in substantial improvements to their crown density and hairline, despite high systemic levels of testosterone and dihydrotestosterone.

Hair loss treatments, specifically 5AR inhibitors, can impact neurosteroids and sexual health. The effects of topical fin/dut on tissue-specific DHT levels are unclear.

The release of a study on 5a-reductase inhibitors (finasteride and dutasteride) which showed an increased risk of depression, dementia, decreased libido, and reduced semen load as potential side effects; discussion around other forms of hair loss treatments such as topical minoxidil, RU58841, or opting to accept baldness; and advice to consider professional help for deeper issues related to hair loss.

A 20-year-old female is using finasteride 5mg and spironolactone 100mg for severe hirsutism and is experiencing minor side effects like water weight loss and irregular periods. She is concerned about potential future side effects and hair regrowth on her scalp.