What is normal penis size? The discussion about penis measurements has been the subject of study for decades. To give you an idea, the first study was published in 1942 in the Journal of Urology.
However, before answering, we need to clarify that genetic factors, hormonal factors, and even measurement methodologies influence normal penis size.
Continue reading to answer your questions about normal penis size and male sexual health.
Main questions about normal penis size
The question of normal penis size is one of the greatest curiosities and concerns in the male universe.
Since adolescence, many boys wonder if their size is within the average, which often generates anxiety and insecurity.
Because it is a topic surrounded by controversy and myths, it is important to provide reliable information to clarify doubts and help demystify the subject about normal penis size.
Below, check the main questions about normal penis size.
What is normal penis size?
According to a study published in the World Journal of Men’s Health in 2023, the average erect penis size is 15.2 cm.
The research was led by Dr. Michael Eisenberg, a urologist and male fertility specialist at Stanford Medicine.
The study compiled data from 75 research studies conducted between 1942 and 2021, with data from 55,761 men worldwide. The conclusion is that normal penis size increased from 12.2 cm to approximately 15.2 cm.
This change is global and the hypothesis is exposure to environmental and chemical factors that accelerate puberty.
What is the average penis size for Brazilian men?
The penis size for Brazilian men varies between 10 cm and 17 cm when erect, according to an article published in the Urological Information Bulletin, from the Brazilian Society of Urology.
What is normal penis size at different ages?
What is the ideal penis size at each age? Before puberty, the member measures between 4 cm and 5 cm.
During this phase, testosterone levels increase, stimulating the growth and development of the member.
Around ages 13/14, it is common to notice significant changes, with the member reaching about 6 to 7 cm flaccid and 10 to 12 cm erect.
This growth continues until ages 16 or 17, the age range where the organ reaches its definitive size.
However, factors such as obesity can compromise penis development, according to a study published in the Journal of Clinical Endocrinology & Metabolism.
The research analyzed 1,130 males between 0 and 20 years old. One conclusion was that penile growth was 10% smaller compared to those with normal weight.
Researchers also found that obese individuals had 50% less testosterone.
What penis size is considered large?
How many centimeters is considered large?
According to research published in the British Journal of Urology that analyzed 15,000 men over 17 years old, it was found that a penis measuring above 16 cm is considered large.
Neutral male silhouette on a beige background, a ruler marking 16 cm as a large penis.
When is it important to consider penis size?
Concern about penis size is sometimes a body image distortion, something of psychological origin.
However, when the erect member measures less than 9 cm, it is characterized as micropenis.
The condition results from problems in testosterone production or action between the second and third trimester of pregnancy.
When a micropenis diagnosis is made in childhood, there are treatment options, such as hormone replacement or surgical intervention, which may show better results at this stage.
Penis size should also be considered when there is a problem affecting male sexual health, such as Peyronie’s disease.
Is there a correlation between penis size and a person’s height?
There is no direct correlation between penis size and a person’s height. These two aspects of the male body are influenced by different genetic and hormonal factors, and develop independently.
Many perceptions of penis size are based on myths and misinformation. Each body develops uniquely, and trying to establish a relationship between these characteristics can generate unrealistic expectations and unnecessary concerns.
What are the determining factors for penis size?
Learn about the determining factors for male member size:
- Genetic factors: the genes we inherit from our parents significantly influence physical development, including penis size;
- Hormones: hormones play a crucial role, especially during puberty. Testosterone acts on penis growth and other male sexual characteristics;
- Nutrition and general health: a balanced diet in childhood and adolescence is fundamental for the development of the entire body and also the penis.
Is there a relationship between penis size and erectile difficulty?
There is no direct relationship between penis size and erectile difficulty. The ability to achieve and maintain an erection depends mainly on blood flow to the penis and the general health of the cardiovascular system, not on the size of the organ.
Erectile problems, also known as erectile dysfunction, can be caused by various factors, such as heart disease, diabetes, high blood pressure, obesity, stress, anxiety, and unhealthy lifestyle habits, such as excessive alcohol consumption and smoking. These factors affect blood circulation and nerves, interfering with the ability to achieve an erection.
Myths and truths about normal penis size
Penis size is one of the most myth-surrounded topics in the male universe. Debunking them can help reduce concerns and promote a healthier and more realistic view of the topic.
Check out below the main myths about normal penis size:
Do sexual partners prefer larger penises?
Myth: There is a belief that sexual partners prefer larger penises. However, the truth is that preferences vary greatly from person to person. Factors such as emotional compatibility, communication, and sexual skills are most often much more important for sexual satisfaction than size.
Do smaller penises provide less pleasure?
Myth: The reality is that sexual satisfaction is not directly related to size. The vagina, for example, has a high concentration of nerve endings in the first few centimeters, which means that stimulation does not depend on penis length.
Does masturbation practice influence penis growth?
Myth: Among the benefits of masturbation are self-knowledge, stress relief, and improved mood. The practice, however, has no influence on member length.
Are there effective methods to increase penis size?
Myth: There are many products and techniques advertised as effective methods to increase penis size. However, most lack scientific evidence, which can put health at risk.
Can penis size decrease?
Yes, penis size can decrease and Peyronie’s disease is one of the reasons.
According to a study published in 2024 in Sexual Medicine Reviews, this anatomical change affects between 0.4% to 9% of the world population.
The condition is characterized by noticeable penile curvature during erection.
The causes of Peyronie’s disease are injuries during sexual intercourse, sports practices, or accidents.
Injuries become scars that compromise penile elasticity. If left untreated, the penis can thin and lose size.
Why can penis size decrease?
As we have seen, Peyronie’s disease can make the penis thinner and affect size.
There are various levels of curvature and medication or surgical intervention is not always necessary.
When the curvature is downward, surgery may be indicated, even in minor degrees.
In this direction of deviation, vertical resistance is usually compromised and the man has difficulty with penetration.
Trauma and microtrauma
Trauma and microtrauma to the penis usually occur during sex, when the man is in a position where he has no control.
Furthermore, poor lubrication and vigorous movements also contribute to these small injuries.
Scratches and mild abrasions that appear after sexual intercourse are temporary.
Treatment in this case is simple and involves scar-healing ointments and abstinence until recovery.
Erectile dysfunction
Erectile dysfunction is associated with factors that impair circulation, such as diabetes, high blood pressure, and smoking.
Reduced testosterone levels can also make erection difficult, because one of its functions is to regulate erectile function.
Peyronie’s disease is another cause of erectile dysfunction. This is because in this condition the penis has internal scars that form a hardened plaque.
This plaque makes penile tissue less elastic and the penis cannot expand and receive blood.
Absence of involuntary nocturnal or morning erections
Nocturnal erection is the response to signals the brain sends to the nerves in the genital region.
This stimulus increases blood levels in the penis.
Erections during sleep and upon waking are important because they oxygenate penile tissues.
Therefore, the absence of nocturnal and morning erections may indicate a problem.
Diabetes
Uncontrolled diabetes increases the amount of sugar in the blood. This affects the health of nerves and blood vessels, including within the penis. If blood flow is insufficient, diabetes can lead to erectile dysfunction.
If you have a history of diabetes or haven’t had a check-up in a while, it is advisable to see a doctor to check your blood sugar levels and start treatment to balance them, if necessary.
Prostate cancer
Surgical treatment of prostate cancer can cause erectile dysfunction if it damages nerves related to erection.
Furthermore, prostate removal tends to leave scar tissue that can retract tissues, reducing penis size.
Priapism
Priapism is a prolonged erection, lasting more than three hours and sometimes without sexual motivation.
It is a urological emergency characterized by the fact that the penis does not return to normal after ejaculation.
The condition causes pain, swelling, and changes to the skin of the member.
If not treated properly, internal scars can form with the potential to alter penis size.
In cases of extreme severity, there can be necrosis, which is tissue death.
How to know if penis size has decreased?
Knowing the penis type helps identify if the member has decreased. With this parameter, it is possible to measure. See the step by step:
- Choose a location with mild temperature;
- The penis needs to be erect;
- Position a ruler over the member, from the pubis to the glans, without counting the foreskin.
Comparison between a normal-sized penis and a penis with reduced size. Next to the penis with size change is a ruler.
My penis size has decreased, what now?
It is advisable to see a urologist when you notice a reduction in size, to investigate possible causes and define the appropriate approach, regardless of whether you measure your penis or not.
When seeking specialized help, it is possible to investigate the causes and define the most appropriate approach for each case.
Learn more about normal penis size and male sexual health
Knowing what is normal penis size is important for identifying changes more quickly.
When you notice any change in anatomy, consult a specialist doctor who can analyze your clinical history and indicate the most appropriate treatment options for your situation.
Learn more:
- What are the most common prostate diseases and their symptoms?
- Penis types: what they are, differences, myths and curiosities
- Male Masturbation: Benefits and Myths Revealed
- Male Hormones That Influence Your Health
- 10 Tips on How to Improve Sexual Performance
- What Is Ejaculation? Answers to Your Main Questions
- What is Andropause? Signs, Symptoms and Treatments
- Learn About the 4 Main Penile Surgeries: Are They Effective?
- Penis Anatomy: How is the Structure, Erection and Ejaculation
- 10 main penile diseases: what they are, how to identify and treat
- Penis Pain: 12 Causes, Symptoms and Treatments
- Male sexual health: 7 habits that affect your performance and how to improve
