by Dr. Kunio Kitamura

News of a report in the British magazine “New Scientist,” which claimed there are statistical differences in the thickness of the anterior vaginal wall (which controls the G spot) between women who have experienced vaginal orgasm and those who haven’t, traveled quickly around the world.

The report was based on study entitled “Measurement of the Thickness of the Urethrovaginal Space in Women with or without Vaginal Orgasm” by Dr. Emmanuele Jannini from the School of Sexology at the University of L’Aquila in Italy. A topic like this, with research into women’s sexual reaction, is bound to attract interest. The study looked at nine women who had experienced vaginal orgasm, 11 who hadn’t and compared them using ultrasonography.

The urethrovaginal space is a complex, net-like structure that encompasses blood vessels, tubular glands accompanying the urinary tract, nerve endings and the bladder outlet. The G spot is located on the inner surface around the urethral tract and the vaginal wall, and is said to be the place where arousal is triggered. In medical terms, the G spot is also known as Skein’s glands, and unless there is a deformity, there is no reason why it should not exist. However, it is said that only 70 percent of women can confirm where their G spot is. That shouldn’t mean the G spot doesn’t exist at all, though.

It is physically impossible for a woman to find her G spot while lying on her back. Gravity forces the body’s internal organs downward and shifts the G spot away from the entrance to the vagina. The best way for her to look for it is by sitting, squatting, or, for instance, while on the toilet. She needs to place strong, upward pressure on the upper part of her vaginal wall with one hand. At the same time, she should use her other hand to push down on her stomach in an area just above the pubic bone. If she is with a partner, the woman should lie on her belly, spread her legs and raise and twist her hips. The partner should insert two fingers while their palm is facing downward and press firmly against the inner wall of the vagina and move the fingers around in the direction of the pelvis to find the G spot The woman must note that it requires a considerable amount of pressure to be able to find the right place. The G spot is not about size. Skein glands are structured like mammary glands. Just as large breasts don’t mean that the amount of breast milk produced increases, so having large Skein glands doesn’t necessarily mean a woman will have a lot of ejaculate.

I’d like to scientifically refute the findings of Dr. Jannini’s team. Admittedly, the women involved in the study had matching ages, pregnancy rates, menstrual cycles, Body Mass Indexes (the figure used to calculate the degree of obesity) and hormone levels. But there are a few points about the study that make me have my doubts about it. Those doubts are:

1. The urethrovaginal space is measured using ultrasonography, but as I mentioned earlier this is a complex, net-like structure incorporating glands, vessels and nerves, so there is no guarantee of finding the G spot with it.

2. Just as I always say that sex is all in the mind, so are feelings obtained from sex different from person to person. That means applying the same stimulation doesn’t always mean it’s going to bring about the same kind of pleasure.

3. I’m a bit worried that a sample size of 20 people is not enough.

There are also areas affecting the thickness of the urethrovaginal space that also need to be taken into consideration. These are:

1. Has the women had a Caesarian section? (There is a possibility that vaginal births may thin out the skin in the space.)

2. Is the woman into sports? (There is a possibility the amount of muscle influences results.)

3.Does she do genital training? (Does she know of Kegel exercises or is she putting them into practice?)

4. Although the women are divided into whether they have felt a vaginal orgasm or not, it doesn’t mention the age or sexual experience of their partners (For instance, have they ever been with someone who has tried to make them ejaculate, though not necessarily in the way porno actor Taka Kato is proficient at making women ejaculate through the practice of shiofuki.)

5. What are their preferred sexual positions? (The G spot is not felt easily through the G spot to be found by men with smaller penises.)Although the study concludes that there is a statistical difference that shows a relationship between experience of vaginal orgasm and thickness of the skin in the urethrovaginal space, I don’t think based on this research alone that it is possible to make any firm statements about the existence of the G spot. (By Dr. Kunio Kitamura, special to the Mainichi)

Dr. Kunio Kitamura is head of the Japan Family Planning Association. He specializes in dealing with issues such as sex, birth control, abortion, puberty worries, sexually transmitted diseases, child-raising (he is a father of five), general gynecology and domestic violence. If he cannot handle directly a problem he has been presented with, he will draw on a wide variety of specialists to provide assistance.

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