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Penis enlargement in Darmstadt

Your experts for permanent penis enlargement in Germany.
Discreet expertise in sensitive matters.

Your experts for evidence-based penis enlargement with lasting results.

The decision to have a penis enlargement is often associated with many questions and uncertainties. Our job here in Darmstadt is to relieve you of these worries and provide you with conscientious, comprehensive and competent advice on the possibility of lengthening your penis.

Our consultation and surgical penis enlargement is based on the latest scientific findings, evidence-based medicine, decades of experience and extensive patient surveys.

The head physician of the UGRS, Jörg Hagen, the author of the following text, has accompanied over 10,000 patients undergoing penis enlargement surgery together with his personal staff in the 30 years (as of 2025) of his UGRS membership.
In addition, he has advised well over 10,000 patients on various urological and plastic surgery problems.
And created a convincing treatment concept for over 3,000 patients with complex urological problems.

At UGRS, you are in exclusively experienced hands, especially when it comes to penis enlargement treatments.

The following description is based on a wealth of scientific evidence regarding the quality of the respective treatment step.”

See also: References in the text and list of sources

Important note: The following information on penis enlargement does not replace a personal consultation with our experienced doctors in Darmstadt. Arrange a discreet appointment for individual treatment planning.

Find the evidence-based answers to your questions below:

Which doctor should perform a surgical penis enlargement?

Why penis enlargement is not a harmless procedure

Many patients believe that penis enlargement surgery is a simple procedure with no risk. Some advertising promises made by doctors have no scientific basis.

Competent advice and the safe, effective performance of a surgical penis enlargement should only be carried out by a doctor who is personally experienced in this procedure. This is what we specialize in in Darmstadt.

Why is many years of experience in penis enlargement absolutely essential?

The study situation on surgical penis lengthening is poor and shows contradictory results. Further research and the creation of guidelines for this operation are necessary. When performed with extensive experience and using evidence-based techniques, the results of enlargement are very good, with low risk and high patient satisfaction (Citation: 1).

Why is not every doctor proficient in penis enlargement surgery?

Surgical penis enlargement is not included in the training catalog of a urology specialist (Citation: 2, 3). And therefore neither is penis enlargement.

The assumption by patients that every specialist is trained in this operation is wrong. It is a niche operation.

When we perform penis lengthening surgery here in Darmstadt and apply our evidence-based methods to a high quality standard, the following is the result:

Important scientific findings:

Current studies emphasize the particular importance of the personal experience of the operating surgeon and correct patient selection. To prevent risks and achieve good and lasting results (Citation: 4, 5, 6, 7, 8, 9, 10)
In penis enlargement, the same technique produces very different results, depending on the surgeon (Citation: 9). This finding shows that an inexperienced surgeon is often to blame for poor results.
It depends on the personal case numbers of the surgeon, not on the case numbers of the clinic or the title of the doctor (Citation: 10, 11).

Risks? Of course - but controllable

Every medical procedure involves risks. However, thanks to our specialization, precise surgical technique and decades of experience, penis enlargement at our clinic in Darmstadt is associated with a very low risk of complications.

Conclusion: Here in Darmstadt, we focus on quality, sustainability and your long-term satisfaction. That’s why we avoid trends and advertising promises. We also don’t use long-known techniques to sell them as novelties, which unfortunately happens again and again. We concentrate on: safe, natural and permanent penis enlargement with medical excellence.

Penis enlargement even when aroused?

Yes, penis enlargement also in erection

Our experience and the application of the right evidence-based technique also leads to an increase in erection length. This has been proven by independent scientific studies (Citation: 1).

Some doctors claim that it is not possible to prolong an erection. This is definitely wrong. We would like to emphasize again the importance of experience and competence for the result. Even when using the identical technique, the results will vary depending on the doctor treating you (Citation: 9)

Our approach to effective penis enlargement in Darmstadt combines the highest level of experience, skill and medical precision. Added to this are the highest quality materials, human empathy and the utmost discretion.

What is our specialty in Darmstadt?

The founding father of UGRS, Dr. Jörn Ege, who is responsible for penis enlargement, performed surgical penis enlargement as early as 1993. He was socially criticized for years for performing this operation.

He trained the current UGRS surgeon Dr. Jethon in this operation between 2002 and 2006. In 1995, Dr. Jörn Ege also developed the first penis extender for use after surgery, the JES Extender named after him.

UGRS doctors and the UGRS team in Darmstadt have 20 years of experience, competence and skill ahead of most other surgeons in Germany.

Milestones of our expertise:

Our evidence-based treatment approach in Darmstadt combines:

Highest level of experience (8,000+ operations)
Medical precision through evidence-based methods
High-quality materials
Human empathy
Maximum discretion
Specialized penis enlargement team

What results can we achieve with penis enlargement?

Our highly effective method is based exclusively on the body’s own tissue. No foreign materials are used.

The operation is an outpatient procedure under local anesthesia with twilight sleep; no general anesthesia is necessary. Thanks to our “speed recovery” technique, you will soon be fit for everyday life again.

Penis enlargement can be combined with penis thickening. See under main menu item “Penis enlargement”.

Your advantages at a glance

We answer your questions

Give us a call or write to us.

Your contact person is Mr. Felix Jung, Head of the Plastic Surgery Patient Secretariat, together with his team of exclusively male employees.

We will be happy to have one of our doctors call you back if you make an appointment.

We will be happy to take the time to answer your questions about penis enlargement surgery.

You can reach us from Monday to Friday, from 9:30 to 19:00 or individually by appointment.

What is the organizational procedure for penis enlargement?

Transparency from the initial consultation to aftercare

Penis enlargement surgery should not be undertaken lightly. That’s why every penis enlargement treatment in Darmstadt begins with a detailed personal consultation. Together with you, we clarify your goals, discuss possible results of penis enlargement and openly answer all questions about risks, the healing process and the technique. Your decision on penis enlargement should be well-founded.

Before the operation in Darmstadt

Anonymous, free and non-binding advice, by telephone or e-mail
Medical evaluation of your health situation
Detailed consultation with Dr. Christoph Jethon, the surgeon responsible for penis enlargement in our clinic
Discussion of your initial anatomical situation and medical history
Clarification of the process and the exact procedure

The procedure itself: Penis enlargement

Duration: approx. 60 minutes
Local anesthesia with gentle twilight sleep. Naturally performed by our experienced anesthetists. General anesthesia is possible on request.
Gentle keyhole technique for penis enlargement
You can find out how we perform the operation under the menu item “Which technique is used for lengthening?”

After the operation (on the day of the operation)

After the operation (day after)

Thanks to our special technique, many patients report minimal pain, rapid recovery and a high level of fitness for everyday life just a few days after the procedure.

What type of anesthesia is used?

We have been performing penis enlargement on an outpatient basis in twilight sleep for around 20 years. Our experience and expertise make this possible.

You will experience the procedure in a relaxed manner, will not notice anything and will be fit again very quickly.

Of course, the anesthesiologist in Darmstadt is always present.

Scientific basis for these benefits:

Which technique is used for penis enlargement?

Scientifically superior results

Our penis enlargement technique (usually as part of a surgical penis enlargement) in Darmstadt is based on the latest scientific findings, evidence-based medicine and decades of experience.

Why pure ligamentolysis is not sufficient for penis lengthening: Studies have clearly shown that the original surgical technique of pure ligamentolysis achieves poorer results (Citation: 16).

Our combined technique for penis lengthening: UGRS doctors have therefore been performing a combined technique that has been modified over the years since 1993:

Important to know: you can find out why we generally do not use silicone implants for penis enlargement under the menu item “Why don’t we use any other technique for penis enlargement?“.

This combined penis enlargement technique as part of penis enlargement achieves better results, especially when performed professionally by an experienced doctor (Citation: 1, 9, 16).

Explained in a patient-friendly way: During penis enlargement, we remove a little extra from the inner part of the penis, which lengthens the outer part.
We used to describe the ratio as 50:50.

Important: No incisions are made in the penis – there are no risks in this regard.

Known from print & TV

Why don't we use a different technique for penis enlargement?

Why don't we use silicone balls or silicone sleeves?

Read here about often concealed risks and dangers

We list methods offered as an alternative to the technique we use and evaluate them according to scientific knowledge and personal experience.

Why don't we use silicone sleeves for penis enlargement?

In the USA in particular, silicone plates for penis enlargement are offered under different product names, even by the same manufacturer. They are often offered as simple, low-risk and with equivalent results.

What important scientific findings are there on silicone sleeves?

Important scientific findings:

Primarily enlargement in the flaccid state: The silicone sleeves lead to enlargement (also penis enlargement) in the flaccid state (Citation: 17). In our experience, many patients are not even aware of this. What it can mean for the erection if an inserted implant does not grow with it is understandable.
Significant risks: The insertion of silicone sleeves can involve considerable risks and complications. These include biofilm formation due to bacteria, infections and foreign body reactions (Citation: 18, 19). These risks can also lead to shortening and curvature of the penis (Citation; 20).
Risk of erosion: Since the penis is a highly flexible organ and the silicone plate is not, the implant may pierce the skin (erosion) or disrupt underlying structures that are important for the function of the penis. A very comprehensive scientific study on the subject concludes that the risk of erosion in particular was probably underestimated in earlier publications (Citation: 21)

So why don't we use silicone sleeves?

Our technique leads to penis enlargement in a flaccid AND erect state and does not involve the risks of foreign material.

Why don't we use silicone balls in the penis enlargement technique?

A silicone ball is also an artificial foreign body and there is a risk of biofilm formation, infection, foreign body reaction and systemic reaction to the insertion of silicone (Citation: 18, 19, 22).

What are the mechanical risks of silicone balls during sexual intercourse?

There is also considerable mechanical force at the point between the penis and the pelvic bone during sexual intercourse. In the worst case, the implant can slip.

Conclusion: Our penis enlargement technique uses only the body’s own tissue. This eliminates the additional risks associated with artificial material and the position of the implant.

Thanks to our experience and expertise, we do not need to use a silicone ball to achieve good results

Are there options for penis enlargement without surgery?

We do not have to resort to science to answer this question, but can answer it on the basis of general logic and common knowledge:

If there was something simple and inexpensive for penis enlargement, we doctors wouldn’t be in the operating theater from morning to night.

Can hormone pills or hormone patches cause penis enlargement?

If hormone pills or hormone patches caused penis lengthening, many professional bodybuilders and millions of older men who take these pills due to age-related hormonal weakness would have very long penises because they take these pills for years. The opposite is the case.

What do you think of penis stretching belts for penis enlargement?

With regard to penis stretching belts, it should be noted that the best-known one refers to an FDA approval that does not even exist and presents a study on effectiveness that firstly relates to a different product and secondly is controversial in the scientific community.

Whether it is credible that it would be risk-free to pull the penis aside for hours every day for 6 months or longer is a question you can surely answer for yourself.

What happens before & after penis enlargement surgery?

Well prepared = relaxed through the procedure.
Good preparation and clear aftercare are crucial for an optimal surgical result with penis enlargement. Our aim is for you to feel well informed, safe and accompanied at all times. That is why you will not only receive medical care from us, but also clear, understandable instructions for every phase.

Before the operation

Take your time to make your decision - we will advise you without pressure.
Our special feature: patients can cancel up to the last second free of charge. We do not pressure or persuade anyone to undergo surgery.
Plan your penis enlargement as stress-free as possible: Many patients do not require a vacation as the procedure is performed on an outpatient basis.
Avoid alcohol and nicotine from 24 hours before the penis enlargement. You should refrain from taking blood-thinning medication (after consulting your family doctor!) for 10 days before the operation.
Bring comfortable clothing, ideally with a wide waistband.
Our secretarial staff will be happy to help you with your travel planning and accommodation.

After the operation

Rest on the day of the operation and follow our instructions for wound care.
Wear the dressing as recommended and avoid rubbing and pressure on the surgical area.
You should refrain from sexual intercourse and sporting activities for about five weeks - after that you will usually be able to work under full pressure again.
Showering is usually possible again after a few days - bathing, sauna and swimming pool only after clearance by the doctor.

Speed recovery: Why our patients are fit so quickly after penis lengthening surgery

Thanks to the combination of experience, gentle technique, keyhole surgery and relaxed anesthesia in twilight sleep, our patients experience penis enlargement as uncomplicated. Many are able to return to work after just a few days – depending on their workload. This is what we call medical efficiency for your quality of life.

Our promise: We will not leave you alone after your penis enlargement. You will receive written aftercare instructions, a contact person for queries – and, if necessary, a short-term check-up. Your safety, satisfaction and recovery are our focus.

Costs & financing of penis enlargement

Clarity right from the start – without hidden fees.
High-quality medical services have their price – but with us, you know where you stand right from the start. We focus on fair, transparent pricing without unexpected additional costs. Because trust begins with openness.

How much does a penis enlargement cost?

The combination of both procedures not only saves time and the healing phase, but also significantly reduces the overall costs. All prices include surgery, anesthesia, aftercare and medical care.

Payment options

Why quality has its price

Our surgical technique for penis enlargement is based on over two decades of research, development and international exchange. We work exclusively with qualified personnel, high-quality materials and state-of-the-art instruments. All of this is incorporated into the costs – as well as your safety, satisfaction and a lasting result.

Our promise

If you’re considering penis enlargement, do it right – with a specialized team that doesn’t compromise.

How long is the average penis when erect?

Read our analysis based on scientific facts and publications below.

The European condom standard EN ISO 4074 can clearly be used for the European penis: The standard-compliant condom has a length of at least 16 cm (Citation: 23, 24). As the DIN standard requires condoms to fit snugly so that their protective function can be effective, the average European penis cannot be significantly shorter than 16 cm. Otherwise, all standard-compliant condoms would be too large and would not be able to fulfill their protective function.

A recent study of 4,800 Italian men found that the average Italian penis is 16.78 cm long when erect (Citation: 25). This is roughly in line with the European condom standard.

The average European penis is therefore approx. 16 -17 cm long when erect

The fact that an average penis is only 14.13 cm or even only 12.3 cm long, as has often been claimed in the past, is simply wrong.

What led to these incorrect values in publications in the past?

Find out here what caused this incorrect value:

Has penis length changed in recent years?

Interestingly, a large-scale study has found that penis size has increased by 24% in the last 20 years (Citation: 26). This is not actually possible because the time span is far too short for a serious evolutionary change.

Certain measurement methods led to incorrect results

The previous procedure was to determine the penis length in erection by stretching the flaccid penis. One study found that on average the penis is 2.64 cm too short in relation to a real erection (Citation: 27).
In old studies, it was apparently wrongly assumed that the stretched length of the flaccid penis is identical to the erection length.

Why are ethnic differences in penis size important?

In addition, it is likely that the old values for penis length were based on the average man worldwide. In the past, it was not taken into account that there are considerable ethnic differences in penis size (Citation: 28, 29, 30).

The old studies on average penis size included Asian men, although Asian men, especially Chinese men, have significantly smaller penises than European or US men (Citation: 30).

Conclusion: The studies and publications prior to 2006 and later studies that referred to the old ones obviously overlooked the error-prone measurement method of elongation (which is also dependent on the traction force) and the ethnic differences. They are therefore based on false assumptions.
It can be assumed that penis sizes have not recently increased by 24%, but have always been 24% larger than measured due to the flawed measurement protocol.

What is the scientifically correct approach to assessing penis size and related problems?

It is now scientifically recommended to measure average penis sizes in relation to their ethnic variance in order to better address the needs of patients or partners (Citation: 29).
For a European woman who has a problem with her partner’s penis size, it is of no use to be told the average size of a Chinese man’s penis.

Is penis length important?

Based on our decades of evidence-based work, extensive experience and interviews with patients and their partners, we can clearly answer this question with “yes”.

What does science say about the importance of penis size?

A study by the California State University and the University of California, which analyzed a survey of around 52,000 men and women in partner relationships, confirms that 84% of women are generally satisfied with the size of their partner’s penis, but also reports that 14% of women would like their partner to have a larger penis (Citation: 31).

Why is 14% dissatisfied women a significant number?

14% may not sound like much at first, but in reality it is a lot, making the issue of penis size very important for women and their sexual satisfaction. Because 14% means more than 8 million women in the USA alone and more than 12 million women in Europe.

This means that the issue of penis size is much more important for women than previously assumed by society.

Does the preference for larger penises have an evolutionary advantage?

Scientists have been investigating whether there is an evolutionary reason for women’s preference for larger penises.

The results are impressive:

How has the female body influenced penis size in evolutionary terms?

On the one hand, the female body seems to have had a decisive evolutionary influence on penis size. The penis seems to have increased in size because the human vagina is larger compared to primates, so that the larger head of a human child, which results from the larger brain, can fit through it. In order for the human penis to continue to fill the vagina during sexual intercourse, it inevitably had to become larger (Citation: 32).

Do larger penises increase the probability of reproduction?

Larger penises also appear to increase the probability of reproductive success (Citation: 33).

A larger penis could therefore be important in terms of the probability of reproduction.

What role does the size variance of the vagina play?

Studies confirm a considerable variance in the size of the female vagina (Citation: 34, 35). Consequently, it is probably correct to assume that penis size also plays a role in finding a suitable partner.

Do women become active in penis enlargement decisions?

Who makes appointments for penis enlargement surgery?

Women are becoming active: We can report from our evidence-based medical practice that more and more women are making an appointment for penis enlargement surgery for their partner.

Penis enlargement surgery is not a male issue, as was long assumed, but affects both partners equally.

The medical information provided on this website is for general information purposes only and does not replace a personal consultation with our doctors. As a tertiary medical center, we are also available for second opinions.

About the author

Jörg Hagen, doctor

The author Jörg Hagen has been the medical director of UGRS International Germany since 1995 and has over 30 years of experience in penis enlargement and complex urological issues. He is regarded as one of the leading experts in the interests of patients in Europe. His international activities, excellent diagnostics and legal successes in patient rights make his assessments particularly well-founded. Patients appreciate his scientifically based, discreet and trustworthy care. His articles are based on many years of practice and well-founded information at the highest level.

List of sources:

1 Littara A, Melone R, Morales-Medina JC, Iannitti T, Palmieri B. (2019) Cosmetic penile enhancement surgery: a 3-year single-center retrospective clinical evaluation of 355 cases. Sci Rep. 2019 Apr 19;9(1):6323.
DOI: Link
PubMed: Link

2 American Board of Urology (2024). Residency Requirements and Training Standards.
Link: ABU Residency Requirements

3. McDougall EM, Watters TJ, Clayman RV. (2007) 4-year curriculum for urology residency training. J Urol. 2007 Dec;178(6):2540-4.
DOI: Link
PubMed: Link

4 Trost L, Watter DN, Carrier S, Khera M, Yafi FA, Bernie HL, Ziegelmann M, Köhler T. (2024 ) Cosmetic penile enhancement procedures: an SMSNA position statement. J Sex Med. 2024 May 28;21(6):573-578.
DOI: Link
PubMed: Link

5 Carrier S, Zajac JD, Punjani N. (2008) Sexual dysfunction in men: advances in therapy and diagnosis. CMAJ. 2008 Sep 9;179(6):587-92.
DOI: Link
PubMed: Link

6 Falagario UG, Piramide F, Pang KH, Durukan E, Tzelves L, Ricapito A, Baekelandt L, Checcucci E, Carrion DM, Bettocchi C, Esperto F. (2024) Techniques for Penile Augmentation Surgery: A Systematic Review of Surgical Outcomes, Complications, and Quality of Life. Medicina (Kaunas). 2024 May 2;60(5):758.
DOI: Link
PubMed: Link

7. Xing MH, Hou SW, Raheem OA. (2022) Aesthetic Penile Augmentation Procedures: A Comprehensive and Current Perspective. Curr Urol Rep. 2022 Dec;23(12):355-361.
DOI: Link
PubMed: Link

8 Colombo F, Casarico A. (2008) Penile enlargement. Curr Opin Urol. 2008 Nov;18(6):583-8.
DOI: Link
PubMed: Link

9 Manfredi C, Romero Otero J, Djinovic R. (2022) Penile girth enhancement procedures for aesthetic purposes. Int J Impot Res. 2022 May;34(4):337-342.
DOI: Link
PubMed: Link

10. Birkmeyer JD, Stukel TA, Siewers AE, Goodney PP, Wennberg DE, Lucas FL. (2003) Surgeon volume and operative mortality in the United States. N Engl J Med. 2003 Nov 27;349(22):2117-27.
DOI: Link
PubMed: Link

11 Chowdhury MM, Dagash H, Pierro A. (2007) A systematic review of the impact of volume of surgery and specialization on patient outcome. Br J Surg. 2007 Feb;94(2):145-61.
DOI: Link
PubMed: Link

12 Mitchell P, Gottschalk M, Butts G, Xerogeanes J. (2013) Surgical site infection: A comparison of multispecialty and single specialty outpatient facilities. J Orthop. 2013 Sep 5;10(3):111-4.
DOI: Link
PubMed: Link

13. Pang G, Kwong M, Schlachta CM, Alkhamesi NA, Hawel JD, Elnahas AI. (2021) Safety of Same-day Discharge in High-risk Patients Undergoing Ambulatory General Surgery. J Surg Res. 2021 Jul;263:71-77.
DOI: Link
PubMed: Link

14 Su X, Zhao Z, Zhang W, Tian Y, Wang X, Yuan X, Tian S. (2024) Sedation versus general anesthesia on all-cause mortality in patients undergoing percutaneous procedures: a systematic review and meta-analysis. BMC Anesthesiol. 2024 Apr 2;24(1):126.
DOI: Link
PubMed: Link

15. Fedok FG, Ferraro RE, Kingsley CP, Fornadley JA. (2000) Operative times, postanesthesia recovery times, and complications during sinonasal surgery using general anesthesia and local anesthesia with sedation. Otolaryngol Head Neck Surg. 2000 Apr;122(4):560-6.
DOI: Link
PubMed: Link

16 Deskoulidi PI, Caminer D. (2023) Lengthening Phalloplasty with Division of the Suspensory Ligament and Distally Based Fat Flaps in Penis Enlargement Operations. Plast Reconstr Surg. 2023 Sep 1;152(3):434e-437e.
DOI: Link
PubMed: Link

17 Elist JJ, Valenzuela R, Hillelsohn J, Feng T, Hosseini A. (2018) A Single-Surgeon Retrospective and Preliminary Evaluation of the Safety and Effectiveness of the Penuma Silicone Sleeve Implant for Elective Cosmetic Correction of the Flaccid Penis. J Sex Med. 2018 Sep;15(9):1216-1223.
DOI: Link
PubMed: Link

18. Anderson JM, Rodriguez A, Chang DT. (2008) Foreign body reaction to biomaterials. Semin Immunol. 2008 Apr;20(2):86-100.
DOI: Link
PubMed: Link

19 Arciola CR, Campoccia D, Ehrlich GD, Montanaro L. (2015) Biofilm-based implant infections in orthopaedics. Adv Exp Med Biol. 2015;830:29-46.
DOI: Link
PubMed: Link

20 Juwono T, Buscaino K, Fernandez-Crespo R, Carrion R. (2021) Infection of the Penuma penile implant and associated post-operative complications: A case report. Urol Case Rep. 2021 Sep 9;39:101846.
DOI: Link
PubMed: Link

21. Siegal AR, Celtik KE, Razdan S, Sljivich M, Kansas B, Shah B, Levine LA, Valenzuela RJ. (2024) A multi-institutional update on surgical outcomes after penile silicone sleeve implantation. Ther Adv Urol. 2024 Apr 2;16:17562872241241858.
DOI: Link
PubMed: Link

22 García Callejo FJ, Calvo González J, Agustí Martínez J, Bécares Martínez C, Monzó Gandía R, Marco Algarra J. (2013) Neck lymphadenitis due to silicone granuloma after mammary implants. Acta Otorrinolaringol Esp. 2013 May-Jun;64(3):217-22.
DOI: Link
PubMed: Link

23rd European condom standard EN ISO 4074 – Official links
DIN Media (Official Sale): https://www.dinmedia.de/de/norm/din-en-iso-4074/263522064

24DIN EN ISO 4074:2024-09 – Draft standard for the next version
DIN Media (draft): https://www.dinmedia.de/de/norm-entwurf/din-en-iso-4074/382482368

25. Di Mauro M, Tonioni C, Cocci A, Kluth LA, Russo GI, Gomez Rivas J, Cacciamani G, Cito G, Morelli G, Polloni G, di Maida F, Giunti D; Trauma, Reconstructive Urology, Men’s Health Working Parties of the European Association of Urology (EAU) Young Academic Urologists (YAU). (2021) Penile length and circumference dimensions: A large study in young Italian men. Andrologia. 2021 Jul;53(6):e14053.
DOI: Link
PubMed: Link

26. Belladelli F, Del Giudice F, Glover F, Mulloy E, Muncey W, Basran S, Fallara G, Pozzi E, Montorsi F, Salonia A, Eisenberg ML. (2023) Worldwide Temporal Trends in Penile Length: A Systematic Review and Meta-Analysis. World J Mens Health. 2023 Oct;41(4):848-860.
DOI: Link
PubMed: Link

27 Habous M, Muir G, Tealab A, Williamson B, Elkhouly M, Elhadek W, Mahmoud S, Laban O, Binsaleh S, Abdelwahab O, Mulhall JP, Veale D. (2015) Analysis of the Interobserver Variability in Penile Length Assessment. J Sex Med. 2015 Oct;12(10):2031-5.
DOI: Link
PubMed: Link

28. Promodu K, Shanmughadas KV, Bhat S, Nair KR. (2007) Penile length and circumference: an Indian study. Int J Impot Res. 2007 Nov-Dec;19(6):558-63.
DOI: Link
PubMed: Link

29. Mostafaei H, Mori K, Katayama S, Quhal F, Pradere B, Yanagisawa T, Laukhtina E, König F, Motlagh RS, Rajwa P, Salehi-Pourmehr H, Hajebrahimi S, Shariat SF. (2025) A Systematic Review and Meta-Analysis of Penis Length and Circumference According to WHO Regions: Who has the Biggest One? Urol Res Pract. 2025 Mar 7;50(5):291-301.
DOI: Link
PubMed: Link

30 Wang C, WangDing Y. (2025 ) A meta-analysis of Chinese men’s penile size in a global context. Andrology. 2025 May;13(4):681-693.
DOI: Link
PubMed: Link

31 Lever, J., Frederick, D. A., & Peplau, L. A. (2006) Does Size Matter? Men’s and Women’s Views on Penis Size Across the Lifespan. Psychology of Men & Masculinity, 7(3), 129-143
Full-text PDF (UCLA)

32 Dixson, A. F. (2009). Sexual Selection and the Origins of Human Mating Systems. Oxford University Press.
DOI: Link

33. Gallup GG Jr, Burch RL. (2004) Semen displacement as a sperm competition strategy in humans. Evolutionary Psychology. 2004;2(1):12-23.
DOI: Link

34 Barnhart KT, Izquierdo A, Pretorius ES, Shera DM, Shabbout M, Shaunik A. (2006) Baseline dimensions of the human vagina. Hum Reprod. 2006 Jun;21(6):1618-22.
DOI: Link
PubMed: Link

35 Pendergrass PB, Belovicz MW, Reeves CA. (2003) Surface area of the human vagina as measured from vinyl polysiloxane casts. Gynecol Obstet Invest. 2003;55(2):110-3.
DOI: Link
PubMed: Link

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