Penis Development: What to Expect During Puberty - Urology

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Penile development


Hello, I am currently a high school freshman.
I have already experienced voice changes, but my Adam's apple is not very prominent yet.
I have a fair amount of pubic hair and some armpit hair, but my genital area hasn't developed much.
My erection is only 9 centimeters.
Will it grow more in the future?

Niming, 10~19 year old female. Ask Date: 2016/12/05

Dr. Du Shixi reply Urology


Hello: To promote growth, it is important to have sufficient sleep, engage in regular exercise, and maintain a balanced diet without becoming overweight.
Please take advantage of this growth opportunity, as you may have 1-2 years left.
Thank you for your inquiry.

Reply Date: 2016/12/05

More Info


During puberty, which typically occurs between the ages of 9 and 14 for boys, a variety of physical changes take place as the body matures and develops. These changes are driven by hormonal shifts, primarily the increase in testosterone levels. Understanding what to expect during this time can help alleviate concerns about development and growth.

Firstly, it’s important to note that puberty is a gradual process and varies significantly from person to person. While some boys may experience rapid growth in certain areas, others may develop more slowly. The changes you are experiencing, such as voice deepening and the growth of body hair, are all normal signs of puberty. The development of the penis and testicles typically occurs later in this process.

Regarding your specific concerns about penis size and growth, it is essential to understand that the average penis size for adult males varies widely. Research indicates that the average erect penis size is around 5 to 6 inches (approximately 12.7 to 15.24 cm), but there is a broad range of what is considered normal. It is also common for boys to experience growth spurts at different times during puberty. Many boys will continue to grow in penis size and testicular volume well into their late teens, sometimes even into their early twenties.

The fact that you have already experienced voice changes and hair growth indicates that you are progressing through puberty, but it’s also normal for other aspects of development, such as penis size, to take longer. The growth of the penis typically occurs in two main phases: the first phase usually begins around the age of 11 to 12, and the second phase can continue until around age 16 or 17. Therefore, it is likely that you will see further growth in the coming years.

In terms of your concerns about the prominence of the Adam's apple (laryngeal prominence), this feature can also vary widely among individuals. Some boys may develop a more pronounced Adam's apple earlier in puberty, while others may notice it later. This is influenced by the growth of the larynx and the changes in the vocal cords, which can continue to develop throughout adolescence.

If you are feeling anxious about your development, it may be helpful to talk to a trusted adult or healthcare provider. They can provide reassurance and answer any questions you may have about what is considered normal during puberty. Remember that everyone develops at their own pace, and there is a wide range of what is considered typical.

In summary, it is entirely normal for you to have concerns about your development during puberty. The changes you are experiencing are part of a natural process, and it is likely that you will continue to see growth in various areas, including the penis. If you have any ongoing concerns or questions, do not hesitate to reach out to a healthcare professional who can provide personalized guidance and support.

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