e***@yahoo.com
2018-08-15 06:40:41 UTC
"The Effect Of Male Circumcision On The Sexual Enjoyment Of The Female Partner"
https://onlinelibrary.wiley.com/doi/pdf/10.1046/j.1464-410x.1999.0830s1079.x
{Excellent Study, some excerpts below:}
… Laumann et al. [5] found that circumcised men had different sexual practices from genitally unaltered men. Circumcised men were more likely to masturbate, engage in heterosexual anal and oral sex, and to engage in homosexual anal sex. In the male rat, removal of the penile sheath markedly interferes with normal penile reflex and copulation. When circumcised rats were paired with sexually experienced females, they had more difficulty obtaining an erection, more difficulty inserting the penis into the vagina, and required more mounts to inseminate than did unaltered males [6]. Preputial secretions in mice and rats are a strong attractant for female mice and rats [7–11], and may provoke the onset of oestrus in mature females [12].
There may be a histological explanation for these findings. The tip of the foreskin, and some or all of the frenulum, are routinely removed as part of circumcision. This tissue contains a high concentration of the nerve endings that sense fine touch [1]. After circumcision the surface of the glans thickens like a callus. The glans is innervated by free nerve endings that can only sense deep pressure and pain [13]…
... The {dubiously regarded} study {about female preference} results may reflect the tendency of people to choose the familiar and shun the unfamiliar…
In a survey conducted on the Internet, circumcised men were significantly more likely to use additional artificial lubricants during sexual activity (odds ratio, OR=5.64, 95% CI=3.65–8.71) [16].
With their circumcised partners, women were more likely not to have a vaginal orgasm (4.62, 3.69–5.80). Conversely, women were more likely to have a vaginal orgasm with an unaltered partner.
Their circumcised partners were more likely to have premature ejaculation (1.82, 1.45–2.27). Women were also more likely to state that they had vaginal discomfort with a circumcised partner either often (19.89, 5.98–66.22) or occasionally as opposed to rarely or never. More women reported that they never achieved vaginal orgasm with their circumcised partners (2.25, 1.13–4.50) than with their unaltered partners. Also, they were more likely to report never having had a multiple orgasm with their circumcised partners (2.22, 1.36–3.63). They were also more likely to report that vaginal secretions lessened as coitus progressed with their circumcised partners (16.75, 6.88–40.77).
During prolonged intercourse with their circumcised partners, women were less likely to ‘really get into it’ and more likely to ‘want to get it over with’ (23.32, 11.24–48.39). On the other hand, with their unaltered partners, the reverse was true: they were less likely to ‘want to get it over with’ and considerably more likely to ‘really get into it.’
When the women were divided into those older or younger than 40 years, the older women were more likely to rate the frequency of orgasm as higher with an unaltered partner (Z=2.04, P=0.02).
… Although these women {a different subset} preferred circumcised partners, they still found unaltered partners to evoke more vaginal fluid production, a lower vaginal discomfort rating and fewer complaints during intercourse than their circumcised partners…
These results show clearly that women preferred vaginal intercourse with an anatomically complete penis over that with a circumcised penis; there may be many reasons for this. When the anatomically complete penis thrusts in the vagina, it does not slide, but rather glides on its own ‘bedding’ of movable skin, in much the same way that a turtle’s neck glides in and out on the folded layers of skin surrounding it. The underlying corpus cavernosa and corpus spongiosum slide within the penile skin, while the skin juxtaposed against the vaginal wall moves very little. This sheath-within-a-sheath alignment allows penile movement, and vaginal and penile stimulation, with minimal friction or loss of secretions. When the penile shaft is withdrawn slightly from the vagina, the foreskin bunches up behind the corona in a manner that allows the tip of the foreskin, which contains the highest density of fine-touch neuroreceptors in the penis [1], to contact the corona of the glans, highest concentration of fine-touch neuroreceptors on the glans [18].
This intense stimulation discourages the penile shaft from further withdrawal, explaining the short-thrusting style that women noted in their unaltered partners. This juxtaposition of sensitive neuroreceptors is also seen in the clitoris and clitoral hood of the Rhesus monkey [19] and in the human clitoris [18].
As stated, circumcision removes 33–50% of the penile skin. With this skin missing, there is less tissue for the swollen corpus cavernosa and corpus spongiosum to slide against. Instead, the skin of the circumcised penis rubs against the vaginal wall, increasing friction, abrasion and the need for artificial lubrication. Because of the tight penile skin, the corona of the glans, which is configured as a one-way valve, pulls the vaginal secretions out of the vagina when the shaft is withdrawn. Unlike the anatomically complete penis, there is no sensory input to limit withdrawal. Because the vast majority of the fine-touch receptors are missing from the circumcised penis, their role as ejaculatory triggers is also absent. The loss of these receptors creates an imbalance between the deep pressure sensed in the glans, corpus cavernosa and corpus spongiosum and the missing fine-touch [20].
To compensate for this imbalance, to achieve orgasm, the circumcised man must stimulate the glans, corpus cavernosa and corpus spongiosum by thrusting deeply in and out of the vagina. As a result, coitus with a circumcised partner reduces the amount of vaginal secretions in the vagina, and decreases continual stimulation of the mons pubis and clitoris.
{end of excerpts}
https://onlinelibrary.wiley.com/doi/pdf/10.1046/j.1464-410x.1999.0830s1079.x
{Excellent Study, some excerpts below:}
… Laumann et al. [5] found that circumcised men had different sexual practices from genitally unaltered men. Circumcised men were more likely to masturbate, engage in heterosexual anal and oral sex, and to engage in homosexual anal sex. In the male rat, removal of the penile sheath markedly interferes with normal penile reflex and copulation. When circumcised rats were paired with sexually experienced females, they had more difficulty obtaining an erection, more difficulty inserting the penis into the vagina, and required more mounts to inseminate than did unaltered males [6]. Preputial secretions in mice and rats are a strong attractant for female mice and rats [7–11], and may provoke the onset of oestrus in mature females [12].
There may be a histological explanation for these findings. The tip of the foreskin, and some or all of the frenulum, are routinely removed as part of circumcision. This tissue contains a high concentration of the nerve endings that sense fine touch [1]. After circumcision the surface of the glans thickens like a callus. The glans is innervated by free nerve endings that can only sense deep pressure and pain [13]…
... The {dubiously regarded} study {about female preference} results may reflect the tendency of people to choose the familiar and shun the unfamiliar…
In a survey conducted on the Internet, circumcised men were significantly more likely to use additional artificial lubricants during sexual activity (odds ratio, OR=5.64, 95% CI=3.65–8.71) [16].
With their circumcised partners, women were more likely not to have a vaginal orgasm (4.62, 3.69–5.80). Conversely, women were more likely to have a vaginal orgasm with an unaltered partner.
Their circumcised partners were more likely to have premature ejaculation (1.82, 1.45–2.27). Women were also more likely to state that they had vaginal discomfort with a circumcised partner either often (19.89, 5.98–66.22) or occasionally as opposed to rarely or never. More women reported that they never achieved vaginal orgasm with their circumcised partners (2.25, 1.13–4.50) than with their unaltered partners. Also, they were more likely to report never having had a multiple orgasm with their circumcised partners (2.22, 1.36–3.63). They were also more likely to report that vaginal secretions lessened as coitus progressed with their circumcised partners (16.75, 6.88–40.77).
During prolonged intercourse with their circumcised partners, women were less likely to ‘really get into it’ and more likely to ‘want to get it over with’ (23.32, 11.24–48.39). On the other hand, with their unaltered partners, the reverse was true: they were less likely to ‘want to get it over with’ and considerably more likely to ‘really get into it.’
When the women were divided into those older or younger than 40 years, the older women were more likely to rate the frequency of orgasm as higher with an unaltered partner (Z=2.04, P=0.02).
… Although these women {a different subset} preferred circumcised partners, they still found unaltered partners to evoke more vaginal fluid production, a lower vaginal discomfort rating and fewer complaints during intercourse than their circumcised partners…
These results show clearly that women preferred vaginal intercourse with an anatomically complete penis over that with a circumcised penis; there may be many reasons for this. When the anatomically complete penis thrusts in the vagina, it does not slide, but rather glides on its own ‘bedding’ of movable skin, in much the same way that a turtle’s neck glides in and out on the folded layers of skin surrounding it. The underlying corpus cavernosa and corpus spongiosum slide within the penile skin, while the skin juxtaposed against the vaginal wall moves very little. This sheath-within-a-sheath alignment allows penile movement, and vaginal and penile stimulation, with minimal friction or loss of secretions. When the penile shaft is withdrawn slightly from the vagina, the foreskin bunches up behind the corona in a manner that allows the tip of the foreskin, which contains the highest density of fine-touch neuroreceptors in the penis [1], to contact the corona of the glans, highest concentration of fine-touch neuroreceptors on the glans [18].
This intense stimulation discourages the penile shaft from further withdrawal, explaining the short-thrusting style that women noted in their unaltered partners. This juxtaposition of sensitive neuroreceptors is also seen in the clitoris and clitoral hood of the Rhesus monkey [19] and in the human clitoris [18].
As stated, circumcision removes 33–50% of the penile skin. With this skin missing, there is less tissue for the swollen corpus cavernosa and corpus spongiosum to slide against. Instead, the skin of the circumcised penis rubs against the vaginal wall, increasing friction, abrasion and the need for artificial lubrication. Because of the tight penile skin, the corona of the glans, which is configured as a one-way valve, pulls the vaginal secretions out of the vagina when the shaft is withdrawn. Unlike the anatomically complete penis, there is no sensory input to limit withdrawal. Because the vast majority of the fine-touch receptors are missing from the circumcised penis, their role as ejaculatory triggers is also absent. The loss of these receptors creates an imbalance between the deep pressure sensed in the glans, corpus cavernosa and corpus spongiosum and the missing fine-touch [20].
To compensate for this imbalance, to achieve orgasm, the circumcised man must stimulate the glans, corpus cavernosa and corpus spongiosum by thrusting deeply in and out of the vagina. As a result, coitus with a circumcised partner reduces the amount of vaginal secretions in the vagina, and decreases continual stimulation of the mons pubis and clitoris.
{end of excerpts}