Iam medicine student . a person told me that his penis is small in daiameter but its length is normal(15 cm)?

This is one of the most commonly asked question on yahoo answers, Please read this, at the bottom it has info on penis enlargement… Just about every guy wonders how he measures up in the “down-there” department at one time or another. Here’s the lowdown for any guy who’s ever worried about whether his penis is a normal size. There’s a fairly wide range of normal penis sizes – just as there is for every other body part. And just like other parts of the body, how a penis appears at different stages of a guy’s life varies quite a bit. You wouldn’t expect someone who is 11 years old to look the same as someone who’s 19.Guys normally develop at different times. Some may start developing as early as 9. Others may not start developing until 15 or even later. The age at which a guy starts to grow varies from person to person. It all depends on when he enters puberty and his hormones start doing their thing. Growth in penis size is just one part of puberty, which also includes such changes as pubic hair development, testicular growth, muscle development, and a growth spurt. Late starters almost always catch up fine – they just reach full maturity a little later. Penises come in different sizes, shapes, and colors. These traits are hereditary, like eye color or foot size, and there’s nothing you can do to change them. Despite what you may hear or read, no special exercises, supplements, or diets will speed up the development process or change a guy’s size. Also, like his feet, a guy’s penis may appear smaller to him just because the perspective is different when he’s looking down. And there’s a lot less difference in penis size between guys when they get an erection (a “*****” or “hard on”) than when their penises are relaxed.In addition to size, guys also wonder about other aspects of how their penises look, such as whether the skin covering the penis is normal or if it’s OK for a guy’s penis to hang to the left or right (it is!). If you’re concerned about how your penis looks, ask your doctor. Guys who are reaching puberty should have regular testicular exams, so that’s a good time to ask your doctor any questions. Taking a ride on the hormonal roller-coaster means lots of changes – and a lot of common worries – for both guys and girls. Just as guys may wonder about how their penises develop, lots of girls ask the same thing about their breasts. If you’re wondering about your development, don’t try to compare yourself to your older brother or your best friend – they’re probably at a different stage of development than you are anyway. The important thing to remember is that it’s OK to not be a mirror image of the guy at the next urinal. Get out the tweezers and the microscope :)You probably have a good sense of where you fit in the distribution of size formore commonly visible measurements of body size: height, size of hands, feet,weight and so on. However, unless you spend a lot of time in a nudistenvironment, there are, understandably other measurements for which you don’thave a good sense of where you fit. Penis size is an obvious example. It’s alsoone that can make a lot of people uncomfortable. They worry about whether theyare abnormal, “too small,” “too large,” and so on. As with most characteristicsof human anatomy, there is a lot of individual variation. You can differsubstantially from average without being unusual or freakish and without anyneed for concern or medical intervention. If you have concerns, by all meansconsult a doctor, but chances are good that you have nothing to worry about.On the other hand, there is always a fascination with people who aresignificantly different for the normal range. This applies to height andweight, size of hands and feet, and, yes, also to penis size. So whatis “normal”? Surprisingly, perhaps, given how common concerns about penis sizeseem to be, there are very little good data based on large samples. There aredata, though, and the numbers seem to agree well enough to suggest that thesample size must be large enough to give reasonably accurate measures ofaverages and distributions.There are additional links there to other studies as well.The average length of an erect penis (measured along the top) is 16.1 cm (6.34in).90% of measurements fall between 10 and 21 cm (4 and 8.25 in).The average girth of an erect penis is 12.3 cm (4.84 in).The average length of the flaccid penis is about 9 cm (3.5 in) with mostmeasurements falling between 5 cm (2 in) and 12.5 cm (5 in).These numbers appear to be approximately independent of such parameters as age(post-puberty) and nationality despite any anecdotal information you may haveheard to the contrary, though reliable data on such variations is quite limited.You can decide what “big” is, but just as you probably wouldn’t particularlylabel someone as “tall” unless they were in the top few percent, you probablywouldn’t want to label someone’s penis as “big” unless it was larger than thenormal ranges quoted above (greater than 21 cm erect length, 12.5 cm flaccidlength). There also appears to be a large variability in the ratio of the erectlength to flaccid length. Average is about 1.8, but ratios from about 1 to 4are not uncommon.You can turn up a lot of additional reading material on this subject with a Google search :Average penis sizeI hope this information helps you to better understand what is “normal”and “big.” Again, if you have concerns, consult your doctor. You may also seemany advertisements for companies that claim to help you increase penis size. Iwould caution you against considering their services because of questionableefficacy in many cases, and because it is unlikely that there is any realreason why you should need to change your size.Your penis is too big, if your woman says it hurts her.But not all woman can take the same size of penis.So, the conclusion is:-If your partner says it is too big, then it is. For her/him.http://www.coolnurse.com/penis_size.htm.http://www.kidshealth.org/teen/sexual_he.http://www.teenhealthfx.com/answers/sex-.Beware of penis-enlargement scamsConsidering penis enlargement? Don’t waste your money on ineffective and possibly dangerous male-enhancement pills, pumps, exercises and surgeries. If you’ve seen the “Austin Powers” movies, you may have laughed at Austin for owning a penis-enlargement pump. But you also may have been thinking, “Hmm. I wonder if something like that could give me an extra inch or two.”Penis-enlargement products aren’t difficult to find. Men’s magazines, sports radio shows and Internet sites are filled with advertisements for pumps, pills, weights, exercises and surgeries — all of which supposedly can increase the length and width (girth) of your penis. Even if you’ve never visited an Internet porn site, you’ve likely received many unsolicited e-mails for products and services that promise to make you more of a man.These come-ons are based on several stereotypes about men’s insecurities. The “male enhancement” industry assumes that every man:·Is afraid he has a small penis·Believes he’d be a better lover if he had a bigger penis·Is looking for a way to safely and effectively increase his penis sizeDon’t fall for it. No scientific research supports the use of any nonsurgical method to enlarge the penis, and no reputable medical society endorses penis-enlargement surgery performed for purely cosmetic reasons. Because many of these techniques can damage your penis and even cause impotence, think twice before trying any of them.Penis size: What’s normal, what’s not?When you were a boy, a locker room bully may have taunted you about the size of your penis. As you compared yourself with other boys in the shower, you may have concluded that he was right. A cylinder-shaped object such as a penis always looks smaller when viewed from above than it does when viewed from the side.As you grew older, you may have seen super-sized penises in X-rated movies and magazines. Such experiences may have left you with a distorted image of what’s normal and what’s not.Most likely, your size is perfectly normal. Research shows that more than 70 percent of men have penises that measure between 5 and 7 inches when erect. A penis is considered abnormally small only if it measures less than 3 inches when erect, and even then it might not matter. Researchers have documented many cases in which men with so-called micropenises have been fully capable of having sex and fathering children.The partner perspective: How they view penis sizeE-mail advertisements would have you believe that women care deeply about penis size. But women responding to magazine surveys say they don’t care about size at all.What’s the truth? A Dutch study of 375 sexually active women who had recently given birth suggests that the surveys are accurate — to a point. Seventy-nine percent of the women said that penis length is unimportant, and 69 percent of them said the same about penis girth.E-mail advertisements would also have you believe that gay men are obsessed with penis size. But individual preferences vary. Average penis size is the same in both gay and straight men.So, unless your partner tells you otherwise, it’s probably safe to assume that you’re fine just the way you are. Understanding your partner’s physical and emotional needs and desires may do far more to improve your sexual relationship than would changing the size of your penis.Nonsurgical methods of penis enlargementMarketers offer many different types of nonsurgical penis enlargement, and often promote them with serious-looking advertisements that include endorsements from “scientific” researchers.But if you look and read closely, you’ll see that claims of safety and effectiveness are completely groundless. Because no reputable scientific research validates any type of nonsurgical penis enlargement, marketers rely on testimonials and before-and-after photos that may not be authentic.At the bottom of such advertisements, you’ll usually find a sentence such as “These statements have not been evaluated by the Food and Drug Administration.” Well, of course they haven’t been. The Food and Drug Administration, the government agency that regulates medications and medical devices, has never approved any medications or devices for enlarging a penis.There are four basic types of nonsurgical penis enlargement:·Manual stretching or squeezing (jelquing). These exercises are supposed to be performed 30 minutes a day for an indefinite period of time. Although they may be safer than other methods, they can lead to scar formation, pain and disfigurement.·Stretching with penile weights. This technique is very likely to cause permanent penile damage.·Vacuum pumps. Because pumps draw blood into the penis and make it swell, they’re useful in the treatment of impotence (erectile dysfunction). This may create an illusion of a larger penis, but results are seldom permanent. Repeated use can damage elastic tissue in the penis, leading to less-firm erections.·Pills and lotions. These usually contain vitamins, minerals, herbs or hormones such as testosterone. Although topical testosterone is sometimes used on adolescent boys to accelerate puberty, there’s no evidence that it or any other substance can increase penis size in adult men. In 2002, authorities in the state of Arizona seized the assets of a penis-pill company, in part because the owners fraudulently claimed their product would deliver a permanent gain of 1 to 3 inches. The company owners also refused to honor their money-back guarantee, committing yet another fraud. MORE ON THIS TOPIC·Complementary and alternative medicine: Evaluate claims of treatment success·Erectile dysfunction·Erectile dysfunction quiz: Don’t suffer in silence Surgical methods of penis enlargement CLICK TO ENLARGE Suspensory ligament Cosmetic surgeons have developed several different enlargement techniques, none of them endorsed by medical organizations. The American Urological Association, the American Society for Aesthetic Plastic Surgery and the American Society of Plastic Surgeons have all issued policy statements against cosmetic surgical procedures to enhance the penis.To lengthen a penis, surgery typically involves snipping the suspensory ligament that attaches the penis to the pubic bone and moving skin from the abdomen to the penile shaft. The suspensory ligament stabilizes and gives an upward tilt to an erect penis.When this ligament is cut, the penis may look longer because more of it hangs outside the body. But cutting the suspensory ligament can cause an erect penis to wobble and position itself at odd angles, particularly when erect.Surgery to make the penis thicker involves suctioning fat from a fleshy part of the body and injecting the fat into the penis. Another technique is simply to graft fat cut away from the buttocks or abdomen onto the penile shaft. Some practitioners use tissue from cadavers.None of these techniques have been shown to be safe or effective. The American Society of Plastic Surgeons describes injecting fat into the penis as “a new and unproven cosmetic procedure of unknown safety” with potential risks that include infection, skin or sensory loss, excessive bleeding and loss of function.Surgeons have developed another technique — albugineal surgery with bilateral saphenous grafts — that involves grafting blood vessels from elsewhere in the body to the penis in order to increase blood flow and penis width during erection. An Italian study of 39 men who underwent the surgery for cosmetic reasons found that it increased width by an average of one-half inch without complications. These men may have been lucky.Following various types of cosmetic penile enhancement surgery, some men have had to undergo additional operations to correct deformities caused by the original procedure. The ill effects include scarring, shorter penises, hair on the base of the penis, low-hanging penis, loss of sensitivity, and bumps, lumps, and clumps of fat. Other complaints include impotence, urinary incontinence and persistent pain.Then there’s the cost: about $10,000 for a typical penis-enlargement surgery that doesn’t require additional corrective surgery. Because cosmetic surgery is seldom covered by insurance, you’ll likely have to bear the entire expense. MORE ON THIS TOPIC·Cosmetic surgery: What to know beforehand When surgery may be an optionSurgeons have devised reconstructive procedures for penises that have been amputated or damaged by circumcisions, animal bites, motor vehicle accidents and physical assaults, among other causes. A penis can be constructed in sex-change operations and to correct birth defects.And this might work: Achieve a healthy body weightOne place that size might count is your abdomen — not your penis. If your lower abdomen hangs over your genitalia, you might look as if you have a shorter, smaller penis than you actually do. Fat can obscure some or much of the upper part of the penis. For this, the best treatment is to achieve a healthy weight.http://www.mayoclinic.com/health/penis/m.

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You are a medical student. You are not licensed to practice medicine. Refer your friend to a doctor.

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Tell him that penises come in all sizes. As long as he feels that his length is adequate, he should not worry about it. Genetics is genetics. He cannot change things like that.I hope this helps you. The main thing you have to do is to reassure this person that he has a normal penis size and that he has nothing to worry about.