Most Common FAQs asked about Testosterone

Alright, let’s talk about it — testosterone. The hormone that gets blamed for everything from mood swings to muscle gains. Whether you’re on TRT, thinking about it, or just trying to figure out why you’re feeling off, chances are you’ve got questions.

Here’s a straight-up, no-fluff breakdown of the most common questions people ask about testosterone, with answers that actually make sense.

Does Edging Increase Testosterone?

Short answer? Not really.
Edging (where you delay orgasm for a long time) is popular in some communities, especially the whole “retain your power” crowd. People claim it boosts testosterone, focus, energy, etc.

Truth is — there’s no solid proof that edging does anything long-term to your testosterone levels. You might feel more energized or mentally sharp, but your actual hormone levels? Probably the same. That said, if it works for you mentally, no harm.

Does Semen Retention Increase Testosterone?

Same kind of idea as edging. Some guys swear by it.
There was one old study that showed a tiny spike in testosterone after 7 days of no ejaculation, but after that, levels went back to normal.

So, does semen retention increase testosterone? Maybe for like a day or two. But not enough to build muscle or fix low T. It’s more of a mindset thing than a hormonal game-changer.

Does Nicotine Increase Testosterone?

This one gets asked a lot.
Some people think nicotine raises testosterone, and some studies have shown a slight increase, but that doesn't mean it's healthy or useful. Smoking wrecks your cardiovascular health, even if T gets a bump.

So yeah, does nicotine increase testosterone? Maybe a little. But you’ll lose more in the long run with the damage smoking causes. Not worth it just for a small boost that probably won’t change your life.

Does Alcohol Lower Testosterone?

Yep. 100%.
Alcohol lowers testosterone, especially if you drink heavy or often. A beer here and there won’t tank your T, but regular binge drinking or daily shots? That’ll drop your levels fast.

Plus, alcohol messes with your sleep, liver, and overall hormone balance. So if you're on testosterone therapy or trying to boost T naturally, keep drinking minimal.

When Does Testosterone Peak After Injection?

This one’s key for guys on TRT.
After a testosterone injection, like cypionate or enanthate, your T levels usually peak around 24 to 48 hours after the shot. Then they slowly taper off over the next few days.

That’s why some guys feel a rush of energy or aggression right after the shot, and then feel tired by day 6 or 7. It’s called the peak and trough effect.

Does Testosterone Increase Size?

If you mean muscle? Yes.
If you mean down there? Not really.
Testosterone increases muscle size, strength, and fat loss when combined with workouts. But if you're asking if TRT will make your penis bigger — nah, unless you had low T during puberty and never developed fully. Then, maybe.

So, does testosterone increase size? Muscles — yes. Junk — not unless something was wrong before.

Does Finasteride Lower Testosterone?

This one confuses a lot of people.
Finasteride, used for hair loss (Propecia), doesn’t lower testosterone — it actually slightly raises total testosterone, but it blocks DHT, which is a more powerful form of testosterone.

So, does finasteride lower testosterone? Not directly, but it messes with how your body uses it. That’s why some guys feel side effects like low libido or mood swings. It’s the DHT crash, not T itself.

Does Low Testosterone Cause Hair Loss?

Actually, no.
Hair loss (male pattern baldness) is linked to DHT, not low T. You can have normal or even low testosterone and still lose your hair if you’re sensitive to DHT.

So, does low testosterone cause hair loss? Not really. In fact, some guys start balding and still have low T — go figure.

Does High Testosterone Cause Hair Loss?

This one’s tricky.
High testosterone can raise DHT, and if your hair follicles are sensitive to it, you’ll lose hair faster. That’s why bodybuilders or TRT users sometimes lose hair — not because of T directly, but because of what it turns into (DHT).

So yes, does high testosterone cause hair loss? It can, if your genetics are unlucky.

Quick Summary (No Fluff)

📌 Edging / Semen retention? Not much real T boost
📌 Nicotine? Maybe a small bump, but not worth it
📌 Alcohol? Lowers testosterone big time
📌 Finasteride? Doesn’t lower T, just DHT
📌 TRT shots? Peak 24–48 hrs after injection
📌 Hair loss? DHT is the real villain, not T itself
📌 Testosterone & size? Bigger muscles, not bigger junk

Final Thoughts

There’s a lot of bro science out there around testosterone, and it’s hard to know what’s real. Hopefully, this clears up some of the confusing stuff. Whether you’re trying to boost T naturally, thinking about testosterone treatment, or already deep into TRT, it helps to understand what’s hype vs what’s facts.

And if you’re not sure where your levels are at — best thing you can do? Get your bloodwork done and talk to someone who knows their stuff.

Let me know if you want this tone for a TRT blog, supplement post, or anything else around hormones. I got you.