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For full functionality, it is necessary to enable JavaScript. Here are instructions how to enable JavaScript in your web browser. Healthline Media, Inc.

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A key limiting step in fertility is the search for the oocyte by spermatozoa. Initially, there are tens of millions of sperm cells, but a single one will make it to the oocyte. This may be one of the most severe selection processes designed by evolution, whose role is yet to be understood.

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How much do you know about sperm cells? You know guys make a lot of them--but how many? You know they're small--but how small?

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When you see a doctor because you're having trouble getting your partner pregnant, he or she will try to determine the underlying cause. Even if your doctor thinks low sperm count is the problem, it is recommended that your partner be evaluated to rule out potential contributing factors and determine if assisted reproductive techniques may be required. This includes examination of your genitals and asking questions about any inherited conditions, chronic health problems, illnesses, injuries or surgeries that could affect fertility.

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The Fertility Institutes offers the highest standard of reproductive medicine. Egg freezing can free you from the biological clock to extend your age of fertility. Our clinics offer leading IVF Programs with expert fertility evaluation and answers.

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Low sperm count means that the fluid semen you ejaculate during an orgasm contains fewer sperm than normal. A low sperm count is also called oligospermia ol-ih-go-SPUR-me-uh. A complete absence of sperm is called azoospermia.

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Men are doomed. Everybody knows this. We're obviously all doomed, the women too, everybody in general, just a waiting game until one or another of the stupid things our stupid species is up to finally gets us.

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Source: Youtube. Of course, it varies between men naturally and because of certain circumstances — but science has prevailed and tested the average amount. This Oakland University study gets into the nitty gritty of it:. Source: Imgur.

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Getting to grips with the numbers behind the man's part of the reproductive system. Although I'm a biologist, I rarely think much about what the cloudy white stuff contains, but in fact semen is far more complex than my endearing childhood image of mini tadpoles swimming around in thin wallpaper paste. There are many features of human semen that are very familiar to most people, but their importance isn't appreciated.

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An abnormal sperm count may also indicate an underlying health condition. A normal sperm count ranges from 15 million sperm to more than million sperm per milliliter mL of semen. Anything less than 15 million sperm per milliliter, or 39 million sperm per ejaculate, is considered low. A low sperm count is often referred to as oligospermia.

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