Normal Penis Size and the Impact of Foreskin Length

What is considered a normal size for the penis?

Hello Dr.
Liu...
I am 20 years old...
I would like to ask...
what is the normal length of the penis when flaccid and when erect? Also, if someone has phimosis and does not undergo circumcision, will it affect future fertility? By the way, are there many people with phimosis?

Anson, 20~29 year old female. Ask Date: 2002/02/15

Dr. Liu Jianting reply Urology

Indeed, at your age, it's common to have many questions about this topic.
The size and length do not necessarily equate to the outcome; the key is whether you understand and treat your precious one well.
I recommend reading two books: "About Sex" and "The Love of Little Brother." These books will provide you with the information you want to know.

Reply Date: 2002/02/15

More Info

Hello! Thank you for your questions regarding penis size and the implications of having a long foreskin. Let's break down your inquiries.

Understanding Normal Penis Size
When it comes to penis size, studies have shown that the average erect penis size is approximately 5.1 to 5.5 inches (about 13 to 14 cm) in length, while the average flaccid size is around 3.6 inches (about 9.1 cm). However, it's important to note that there is a wide range of what is considered "normal." Individual variations are common, and factors such as genetics, hormonal levels, and overall health can influence size.

Impact of Foreskin Length
Regarding your concern about having a long foreskin (a condition known as phimosis when it is too tight to retract), it is essential to understand that this condition is relatively common among males, especially in younger age groups. Many boys are born with a foreskin that does not retract fully, and this often resolves naturally as they grow older.
If the foreskin is long but not causing any pain, discomfort, or hygiene issues, it may not require any medical intervention. However, if you experience difficulties retracting the foreskin, recurrent infections, or pain during erections or sexual activity, it may be advisable to consult a healthcare provider.

Fertility Concerns
As for the potential impact of a long foreskin on fertility, there is no direct evidence to suggest that having a long foreskin affects fertility. Fertility is primarily influenced by sperm quality and overall reproductive health. However, if the foreskin causes issues such as infections or inflammation, it could indirectly affect fertility by impacting sperm health.

Prevalence of Long Foreskin
Many males experience some degree of foreskin length variation, and it is not uncommon for individuals to have a longer foreskin. In fact, studies suggest that a significant percentage of males may have a foreskin that does not retract fully during childhood. As mentioned earlier, this often resolves with age.

Conclusion
In summary, penis size varies widely, and both long foreskin and phimosis are relatively common conditions. If you have concerns about your foreskin or any related issues, it is always best to consult with a healthcare professional who can provide personalized advice based on your specific situation. Regular check-ups and open discussions with your doctor can help ensure your reproductive health is on track.
If you have any further questions or concerns, feel free to ask!

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