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  2. Virility - Wikipedia

    en.wikipedia.org/wiki/Virility

    In studies that controlled for female age, comparisons between men under 30 and men over 50 found relative decreases in pregnancy rates between 23% and 38%. [4] Older men have lower semen parameters resulting in lower fertility potential. The effects of aging on semen quality are summarized below based on a study of 1,219 subjects: [5]

  3. 6 supplements men can take for stronger, healthier sperm - AOL

    www.aol.com/news/6-supplements-men-stronger...

    Men with a low sperm count can boost their chances of fathering a child with supplements like zinc and vitamins D, C, and E. 6 supplements men can take for stronger, healthier sperm Skip to main ...

  4. Natural fertility - Wikipedia

    en.wikipedia.org/wiki/Natural_fertility

    Natural fertility is a concept developed by the French historical demographer Louis Henry to refer to the level of fertility that would prevail in a population that makes no conscious effort to limit, regulate, or control fertility, so that fertility depends only on physiological factors affecting fecundity.

  5. Male infertility - Wikipedia

    en.wikipedia.org/wiki/Male_infertility

    The condition and its effects on both men and women is the topic for example of the novel set in Nigeria entitled, The Secret Lives of Baba Segin's Wives. A lot of research has pointed to the relationship between infertility and emasculation. [85] [86] [87] This association has led to infertility being less studied and diagnosed in men over ...

  6. Fertility - Wikipedia

    en.wikipedia.org/wiki/Fertility

    Demographers measure the fertility rate in a variety of ways, which can be broadly broken into "period" measures and "cohort" measures. "Period" measures refer to a cross-section of the population in one year. "Cohort" data on the other hand, follows the same people over a period of decades. Both period and cohort measures are widely used. [7]

  7. Fertility awareness - Wikipedia

    en.wikipedia.org/wiki/Fertility_awareness

    Actual use or typical use effectiveness rates include all women relying on fertility awareness to avoid pregnancy, including those who fail to meet the "perfect use" criteria. Rates are generally presented for the first year of use. [41] Most commonly, the Pearl Index is used to calculate effectiveness rates, but some studies use decrement ...

  8. What Is Low Testosterone & What Causes It? - AOL

    www.aol.com/low-testosterone-causes-125700734.html

    Research shows that older men and women with low testosterone have lower red blood cell counts and an increased risk of developing anemia. Anemia can produce symptoms like fatigue, weakness, loss ...

  9. Heat-based contraception - Wikipedia

    en.wikipedia.org/wiki/Heat-based_contraception

    In the case of artificial cryptorchidism or thermal insulation of the testicles, the use of a temperature close to that of the body (37 °C) has made it possible to increase the time of exposure in order to slow down the spermatogenesis process over longer periods, 4 years in a row at most. To date, only a decrease in testicular volume by a few ...

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