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Human papilloma virus HPV is one of the most common viral sexually-transmitted diseases worldwide. The prevalence of HPV is higher in infertile males when compared with fertile men and ranges between 10 and HPV can bind to spermatozoa and can potentially be transferred to fertilized oocytes.

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Tutor A. Spermatozoa were first described by Leeuwenhoek in the 17th century but it was not until that the sperm count was found to be associated with fertility potential Since that time a variety of sperm tests and semen parameters have been developed with the hope of clarifying whether or not a man could impregnate his partner.

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Thanks to cheap sitcom jokes, the marathon power poundings of pornand a host of other cultural and societal pressures, many men worry about not lasting long enough in bed. Lasting as long as Kanye Westthey learn, is a perquisite for good sex and self-respect. Popping off too early is visceral proof they cannot please a partner or live up to the expectations of masculinity.

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Sharing personal information brings people closer together. Verified by Psychology Today. All About Sex.

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Premature ejaculation PE occurs when a man experiences orgasm and expels semen within a few moments of beginning sexual activity and with minimal penile stimulation. It has also been called early ejaculationrapid ejaculationrapid climaxpremature climax and historically ejaculatio praecox. There is no uniform cut-off defining "premature", but a consensus of experts at the International Society for Sexual Medicine endorsed a definition of around one minute after penetration.

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A couple weeks ago, I ran across a research paper that inadvertently answered one of those awkward questions that so few people get the chance to talk about: How long does the average man last in bed? You see, these researchers were actually studying premature ejaculation. To do so, they recruited about random heterosexual couples from The Netherlands, Spain, Turkey, the UK, and the US and asked them to track the duration of their sexual encounters using a timer and diary.

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A scientist, though, would phrase the same question in an almost comically obscure way: What is the mean intravaginal ejaculation latency time? Measuring an average time to ejaculation is not a straightforward matter. What about just asking people how long they takeyou say?

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