Concerns About Penis Size and Development in Young Men - Urology

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Penile issues


Hello, doctor! I just turned 18 this year.
I've had a habit of masturbation since the sixth grade, and it continues to this day.
Recently, I noticed that my younger brother's size has become larger than mine, and mine hasn't changed much.
This makes me very worried.
Is there something wrong with my development? What should I do? (I have a lot of body hair in my secondary sexual characteristics, and I also have excess weight.)

Xiao Qiao, 10~19 year old female. Ask Date: 2015/11/04

Dr. Fu Shizhang reply Urology


The size of each individual varies and is not related to masturbation.
If there are concerns about developmental issues, it is recommended to visit a clinic for consultation.

Reply Date: 2015/11/04

More Info


It's completely normal for young men to have concerns about their physical development, especially regarding penis size and overall maturity. At 18 years old, you are at the tail end of puberty, which typically concludes between the ages of 16 and 18 for most males. However, it's important to remember that there is a wide range of normal when it comes to physical development, including penis size.

Firstly, it's crucial to understand that penis size can vary significantly among individuals, and many factors contribute to this variation, including genetics, hormonal levels, and overall body composition. The average erect penis size is around 5 to 6 inches (approximately 12.7 to 15.24 cm), but many healthy individuals fall outside this range. Your reported size of 12 cm when erect is within the normal range, and it's essential to focus on functionality rather than size.

Regarding your concerns about your brother's size compared to yours, it's common for siblings to have different rates of growth and development. Puberty can affect individuals differently, and comparing yourself to others can lead to unnecessary anxiety. It's also important to note that hand masturbation does not affect penis size or growth. This is a common myth; the size of the penis is primarily determined by genetics and hormonal influences during puberty.

You mentioned that you have a lot of secondary sexual characteristics, such as body hair, which indicates that your body is producing the necessary hormones for male development. However, if you feel that your development is significantly behind your peers, it might be worth consulting a healthcare professional. A doctor can assess whether there are any underlying hormonal issues or other factors affecting your development.

As for your body composition, being overweight can sometimes affect the appearance of the penis, as excess fat in the pubic area can make it appear smaller than it is. Losing weight through a balanced diet and regular exercise can help improve your overall health and may change how your penis appears. However, it's essential to approach weight loss in a healthy manner, focusing on gradual changes rather than extreme diets.

Lastly, it's important to remember that penis size does not determine your worth or your ability to form relationships. Confidence, communication, and mutual respect are far more critical in building successful relationships. If you're feeling anxious about dating or relationships, consider talking to someone you trust or a mental health professional who can help you work through these feelings.

In summary, while it's natural to have concerns about your development, it's essential to recognize that there is a broad spectrum of normal. If you have specific worries about your health or development, seeking advice from a healthcare provider is the best course of action. They can provide personalized guidance and reassurance based on your individual circumstances.

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