Key Takeaways
- Bottom growth refers to the enlargement of the clitoris and surrounding tissue caused by testosterone during gender-affirming hormone therapy (GAHT).
- Most people notice early changes within the first few months, often starting with increased sensitivity before visible growth becomes more noticeable.
- The majority of bottom growth typically occurs within the first year, with smaller, more gradual changes continuing over time but this can be dose dependent.
- Growth size varies, but many people experience around 1–4 cm of clitoral growth, depending on their body’s response to testosterone.
- Bottom growth often feels different before it looks different, with sensations like tingling, increased sensitivity, or throbbing being common in the early stages.
- Testosterone also affects sexual function, including increased libido, changes in arousal, and differences in how orgasms feel.
- Some physical side effects, such as dryness, can occur, but these can usually be managed with the right support and care.
- Bottom growth is a permanent effect of testosterone, even if hormone therapy is adjusted or stopped.
- Every experience of bottom growth is different, and timelines, size, and sensation can vary widely from person to person.
When you start testosterone, your healthcare provider can help explain what to expect in terms of bottom growth. This blog is written to support transgender, nonbinary, and other folks taking testosterone who want to know more about how their gender-affirming hormone therapy may affect bottom growth.
One of the most profound—but least-discussed—changes that people experience on T is “bottom growth.” In the first year of testosterone, sexual and genital changes are common. This can include increased sensitivity, growing genitals, orgasm changes, and other developments. These changes vary from person to person. Here are some common questions and concerns that people have when they start their testosterone prescription.
How big will my clitoris get when I take testosterone?
Bottom growth is when your clitoris, labia, and/or vulva grow in size. (Everyone uses different words for this part of their body. Some people find that certain terms feel gendered because of their affiliation with “feminine” or “female” body parts. In this article, we are using these clinical terms because they are easily understandable, commonly used, and accessible.) Testosterone causes clitoral growth that is significant in some people. The clitoris can grow in length and circumference. The average person notices about 1-4 cm of growth. The amount of growth each person experiences is influenced by their individual body’s response to testosterone. For example, some people notice an inch of growth or more, though more than that is uncommon.
While taking T, the labia and vulva may also grow. Some people notice that the labia, which are the two pairs of lips on the outside of the vagina, get bigger, longer, or darken. These changes are normal.
Bottom growth will make your clitoral erections more obvious, too. When you are aroused or stimulated, your erectile tissue will expand, just like it did before you began using T. As you experience bottom growth, your erect tissue will be more obvious.
What is bottom growth on testosterone?
Bottom growth refers to the enlargement of the clitoris and surrounding tissue that can occur when someone takes testosterone as part of gender-affirming hormone therapy. These changes happen gradually and vary from person to person.
How much bottom growth happens on testosterone?
Bottom growth is when your clitoris, labia, and/or vulva grow in size. (Everyone uses different words for this part of their body. Some people find that certain terms feel gendered because of their affiliation with “feminine” or “female” body parts. In this article, we are using these clinical terms because they are easily understandable, commonly used, and accessible.)
Growth size
Testosterone causes clitoral growth that is significant in some people. The clitoris can grow in length and circumference. The average person notices about 1-4 cm of growth. The amount of growth each person experiences is influenced by their individual body’s response to testosterone.
Labia/vulva changes
While taking T, the labia and vulva may also grow. t The labia are the two pairs of lips on the outside of the vagina. They can get bigger, longer, or darken. These changes are normal.
Erections visibility
Bottom growth will make your clitoral erections more obvious. When you are aroused or stimulated, your erectile tissue will expand, just like it did before you began using T butyour erect tissue will be more obvious.
When Does Bottom Growth Start? Timeline and Early Changes
Early changes
Most people who take testosterone notice bottom growth by the way it feels, long before they notice any visible changes. The clitoris is a sensitive structure that is about four inches long and has approximately 8,000 nerve endings. The clitoris is made of erectile tissue and extends out from the vulva. The visible part of the clitoris can look like a small bud or button, while the rest of the structure is hidden inside the body.
As testosterone affects your different body parts, you may feel like your clitoris is larger, firmer, or more responsive. Increased blood flow to your sex organs might make your clitoris look deep red or pink. Your labia may also look or feel swollen. As your clitoris grows, your clitoral hood may grow or it may remain about the same, making the external bud more visible. Some people switch from wearing briefs to boxers to manage this sensation change.
Mid-stage (3–6 months)
During the mid-stage of testosterone therapy, bottom growth is more noticeable both physically and in terms of sensation. Increased sensitivity is common during this period, and some people experience tingling, throbbing, or brief “zapping” sensations as the tissue continues to respond to hormonal changes.
Growth in both length and girth, though the rate and extent vary widely from person to person. Changes in blood flow can make the area appear darker or more flushed, and erections may become more prominent. For some people, this is also when sensitivity begins to stabilize slightly compared to the earliest weeks, though it can still feel heightened.
Later stabilization (6–12+ months)
After the initial growth phase, changes tend to become more gradual. By around 6–12 months, many people have experienced the majority of their bottom growth, although smaller changes can continue beyond this point. Sensitivity often becomes more predictable and less intense compared to earlier stages.
At this stage, people may notice a more consistent pattern in how their body responds to touch, arousal, and stimulation. While growth may slow, it doesn’t necessarily stop completely, and individual experiences can differ significantly depending on factors such as genetics, hormone levels, medication dose and overall response to testosterone.
Sexual Changes During Bottom Growth
Sex Drive
Gender-affirming hormone therapy (GAHT) affects every system of the body. From your skin and hair to your emotions, testosterone will create changes throughout your body. That includes your sexual function and genitals. Changes to your sex drive are a normal and common experience on T. You might feel more interested in sex or find that you want to masturbate more often. Your fantasies might change, as well as your attraction to other people.
Many people find that, as their body begins to align with their gender identity, they feel happier—and more attractive, too! DK Green, a trans man who is also a psychotherapist, says that self-acceptance opens up new possibilities in the bedroom. He says, “Then you can start talking about, what do you like, what would you like? What are your fantasies about when you masturbate? What is it that you’re designing?”
Sensation and orgasms
Testosterone may also change your sensation of orgasm. Rather than feeling the slow, building surge of an orgasm, you might find that the experience is abrupt and more intense. Your ability to have multiple orgasms might change, or you might feel so sensitive that you don’t enjoy direct touch. Zaps and tingling sensations are a sign of growth that will subside as your bottom growth slows. Hypersensitivity is more common in the first 3-6 months on testosterone and tends to stabilize after some time.
Vaginal dryness
At the same time, testosterone can also cause vaginal dryness. This medication will make the skin that lines the vagina thinner and can also change your vaginal pH and susceptibility to infections. It might take longer to feel “turned on” and lubricated in the way you’re used to. If you practice penetrative sex, condoms, gloves, or other barriers will help protect you from the increased risk of STI transmission. Thicker lubricant or a longer-lasting silicone lube can make sex more comfortable for you.
Like this topic? Check out:
How To Increase Bottom Growth on Testosterone
Everything you need to know about testosterone for gender-affirming care
Sex Ed Failed Us: What Trans People Need To Know
What if I don’t want bottom growth as part of my transition?
Some people worry that bottom growth will worsen their gender dysphoria. Others are not comfortable with the idea of increased libido. Some folks are survivors of sexual trauma and feel scared about any changes related to their genitals. If bottom growth is potentially triggering for you, be open with your clinician about your transition goals. You don’t have to give up using gender-affirming hormone therapy. While not everyone needs or wants to take testosterone, those of us who do know that T is a life-saving medication. Every person deserves to feel safe, comfortable, and affirmed. Testosterone can create the sensation of gender euphoria, which is the overwhelming joy that people experience when their gender expression matches their gender identity. Your healthcare team can provide individual guidance about dosing recommendations or recommendations that might limit bottom growth, so that you have the best experience possible with GAHT.
Every medication has side effects, including testosterone. Some of these effects may be more desirable than others. For example, some people look forward to having more “masculine” facial features as T subtly shifts the fat and tissue of their body. Other people love their lowering voices or their new sense of energy. At the same time, the same person who wants and needs to be on T might not look forward to facial hair.
Unfortunately, it’s not possible to pick and choose which of the side effects of T you will experience. That includes bottom growth. Hormones work over a period of time, not overnight. Taking a higher dose of T will make your hormone levels higher and result in more pronounced changes. If you are not sure how testosterone will change your body, or you’re worried that the medication may give you some side effects you can’t deal with, reach out to our care team to get resources and support.
How come people don’t talk about bottom growth?
Our culture stigmatizes sex, and avoids talking about pleasure—which means that topics like bottom growth, masturbation, transgender sex, T4T, and clitoral stimulation are treated like they are off limits. Many of us only see our trans bodies represented in porn because trans sexuality is not part of the mainstream discussion about sex. However, it shouldn’t be this way!
Having an open, honest conversation about sex and bottom growth will help you get your questions answered. Your clinician at Plume is open to these conversations and here to talk to you about any of the changes you’re going through. If you don’t have access to a clinician, you can still find support for bottom growth. The trans community is a wealth of information. There are some online resources, such as transmasc forums on sites such as Reddit. Chella Man, a queer, Deaf, genderqueer artist, documented his changing body for Them. His story—and nude photos that show his personal journey with testosterone—are a wonderful resource for people who wonder about FTM bottom growth.
If you ever wonder, “is my bottom growth normal?” or “what’s the timeline for bottom growth,” feel free to contact Plume’s care team to ask one of our healthcare providers. Many of us are trans ourselves and have been through the same changes you’re experiencing. Your gender journey is unique and you deserve to feel empowered as you move forward toward the sense of peace and fulfillment you’re seeking. As your body changes, you have an amazing opportunity to learn more about yourself, your mind, and your heart.
Frequently Asked Questions About Bottom Growth on Testosterone
How big does bottom growth get?
Most people experience between 1–4 cm of growth, though this can vary. Some people notice more or less change depending on how their body responds to testosterone.
When does bottom growth start on testosterone?
Many people notice early changes within the first few weeks or months of starting testosterone. Sensation changes often come first, with visible growth becoming more noticeable over time.
Is bottom growth permanent?
Bottom growth is typically considered a permanent effect of testosterone. While some changes may shift slightly if hormones are stopped, the increase in size generally does not fully reverse.
What does bottom growth look like?
Bottom growth can include an increase in the size of the clitoris, as well as changes in the appearance of the surrounding tissue. The area may appear larger, darker, or more prominent over time.
What does bottom growth feel like?
Many people describe increased sensitivity, tingling, or throbbing sensations, especially in the early months. These feelings often become less intense as the body adjusts.
Does testosterone increase sex drive?
Yes, many people experience an increase in libido when starting testosterone. This can include changes in sexual desire, arousal, and how the body responds to stimulation.
Why do some people refer to this as “clitoral growth” or “clitoromegaly”?
Some medical or search terms describe bottom growth as clitoral enlargement or clitoromegaly. These terms refer to the same physical process, though different people may prefer different language.
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