Penis Development: What to Expect During Puberty - Urology

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Development of the penis


Hello, I am 16 years old this year.
I have a lot of pubic hair, and my leg hair is also quite thick.
My armpit hair is about 4 centimeters long but not very dense.
However, my penis hasn't grown at all; it hasn't changed since middle school during puberty.
I heard that the penis often gets erect while growing.
I do experience erections in the morning when taking the school bus, and sometimes while sitting in class, but it still hasn't grown and is only 10 centimeters long.
Is it possible for it to grow an additional 3 to 4 centimeters in the future? Otherwise, I really don't know how to approach dating.

Niming, 10~19 year old female. Ask Date: 2017/06/02

Dr. Du Shixi reply Urology


Hello: Most of the development has likely already occurred.
It is recommended to exercise more, maintain a balanced diet, and ensure adequate sleep; there may still be opportunities.
If you are very concerned, please seek medical attention.
Wishing you good health.

Reply Date: 2017/06/02

More Info


During puberty, which typically occurs between the ages of 9 and 14 for boys, significant physical changes take place, including the development of the penis and testicles. It’s important to understand that puberty is a gradual process, and each individual develops at their own pace.
At 16 years old, you are still within the typical age range for puberty, and many boys continue to experience growth and development during this time. The growth of the penis usually begins around the age of 11 to 12 and can continue into the late teens. It’s common for boys to notice changes in their body hair, such as the growth of pubic hair, underarm hair, and leg hair, before they see significant changes in the size of their penis.

The average size of an erect penis varies widely, but studies suggest that the average size is around 5 to 6 inches (12.7 to 15.24 cm) in length. However, it’s crucial to remember that penis size does not determine one’s worth or ability to have successful relationships. Many factors contribute to attraction and compatibility in relationships, including personality, confidence, and mutual interests.

Regarding your specific concerns about growth, it is possible for the penis to continue growing into your late teens. While some boys may experience a growth spurt in size during this time, others may see more gradual changes. It’s not uncommon for boys to feel anxious about their development, especially when comparing themselves to peers.
If you are concerned about your development or have questions about what is considered normal, it may be helpful to speak with a healthcare provider. They can provide reassurance, answer your questions, and discuss any potential concerns you may have regarding your growth and development.

In terms of erections, it’s completely normal for boys your age to experience spontaneous erections, especially during puberty. These can occur due to hormonal changes, physical stimulation, or even without any apparent reason. This is a natural part of sexual development and is not something to be embarrassed about.

Lastly, it’s essential to focus on building self-esteem and confidence, which are key components of forming healthy relationships. Engaging in activities you enjoy, developing friendships, and communicating openly with others can help you feel more comfortable in social situations, including dating.

In summary, while you may not have seen significant changes in penis size yet, it is still possible for growth to occur as you continue through puberty. Remember that everyone develops at their own pace, and it’s essential to focus on overall health and well-being rather than just physical attributes. If you have ongoing concerns, consider consulting with a healthcare professional for personalized advice and support.

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