>>510444413Pharmafag here
Look up androgenic alopecia. Every single human being is susceptible to it to varying degrees. Yes, that includes women. Here's the explanation.
Testosterone is metabolized into dihydrotestosterone (DHT) by the enzyme 5-alpha-reductaste. Human scalp follicles are susceptible to something known as "miniaturization" as DHT binds to the scalp follicle.
This is why 5 alpha reductase inhibitors (finasteride, dutasteride) work so well for keeping your hair.
NOW, this does not mean you should jump on testosterone and take finasteride to block DHT metabolism. Number one, nobody under the age of 25 should be taking finasteride period. DHT is the androgen most responsible for determining secondary sex characteristics like voice deepening, penis size, beard growth, etc.
If you block DHT during puberty, you will literally look and sound like a prepubescent boy. This is why those Italian boys in choirs got their balls chopped off. This is why "trans" MTF children are given finasteride. It's absolutely disgusting and will absolutely ruin your life.
I say 25 because even though "puberty" is done, secondary male sexual characteristics take time to develop. Ideally, you wouldn't touch finasteride until 35+.
To anyone who is thinking about using finasteride to save their hair, do what I do. Do NOT take it as prescribed, there is absolutely Z E R O reason to take it daily. Take 0.5mg every other day AT MOST.
Ideally, take 0.5mg every four days. This is about the time it stops inhibiting DHT. Now, if you're going to do a cycle or "TRT", you need risk really fucking shit up if you take it with finasteride. Im not going to get into it because it's complicated but if you do this you need to be monitoring your E2 levels every other week or you risk developing gynocomastia and a host of other issues.