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Latest Semen quality Stories

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2011-08-19 14:49:59

Scientists have discovered exactly how a human egg captures incoming sperm to begin the process of fertilization. The new study could help future couples who suffer from infertility. The international team of researchers found that a specific kind of sugar molecule makes the outer coat of the egg "sticky," which helps the egg and sperm bind together. "The details we've discovered here fill in a huge gap in our knowledge of fertility and we hope they will ultimately help many of those...

2011-07-20 17:29:23

The loss of a protein that coats sperm may explain a significant proportion of infertility in men worldwide, according to a study by an international team of researchers led by UC Davis. The research could open up new ways to screen and treat couples for infertility. A paper describing the work is published July 20 in the journal Science Translational Medicine. The protein DEFB126 acts as a "Klingon cloaking device," allowing sperm to swim through mucus and avoid the immune system in order to...

2011-05-25 18:59:13

Vitamin D is important for optimal reproductive function in both animals and humans. It has long been known that serum vitamin D level is important for reproductive function in various animals, but now researchers from the University of Copenhagen and Copenhagen University Hospital have shown that this relationship can also be demonstrated in humans. A new study conducted in 300 normal men showed a positive correlation between the percentage of motile sperm and serum vitamin D levels. The...

2011-03-14 16:40:31

A new study has shown that a surgical technique called microdissection testicular sperm extraction (TESE) can effectively locate and extract viable sperm in more than one-third of adult male childhood cancer survivors who were previously considered sterile due to prior chemotherapy treatment. As a result, many of the men were subsequently able to father children with the help of in vitro fertilization. The findings offer a new option for many cancer survivors who want to have children but...

2011-03-03 12:26:01

A new study published in the International Journal of Andrology reveals that semen quality has significantly deteriorated during the last ten years in Finland, a country that previously was a region with high sperm counts. At the same time, the incidence of testis cancer in the Finnish population showed a remarkable increase, following the worrying trends observed in several countries in Europe and the Americas. Led by Jorma Toppari, MD, PhD, of the University of Turku, researchers examined...

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2010-12-10 13:15:00

A study said that most exercise appears to have little relationship with the quality or quantity of sperm, but men who bike at least five hours a week have fewer and less active sperm than men who did not exercise. Lauren Wise at Boston University, who led the study, said that research among competitive athletes has linked biking to genital or urinary problems and poor semen quality. "However, we were uncertain whether we would find an association among a sample of men engaged in more...

2010-11-29 16:31:39

European Science Foundation publishes new report on male reproductive health Reduced male fertility may be making it even harder for couples to conceive and be contributing to low birth rates in many countries, reveals a new European Science Foundation (ESF) report launching at a meeting in Paris. More than 10% of couples worldwide are infertile, contributing to the growing demand for assisted reproduction techniques such as in vitro fertilisation (IVF) for which Robert G. Edwards won the...

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2010-10-28 09:30:00

Researchers have linked a chemical compound commonly used in the making of plastics to low-sperm counts and other reproductive issues among Chinese factory workers, according to a study published in the latest edition of the journal Fertility and Sterility. The study, which was funded by the National Institute of Occupational Safety and Health (NIOSH) and completed at the Kaiser Permanente Division of Research in Oakland, California, analyzed the urine levels of male workers in China. Those...

2010-10-28 02:00:00

OAKLAND, Calif., Oct. 28 /PRNewswire/ -- Increasing urine BPA (Bisphenol-A) level was significantly associated with decreased sperm concentration, decreased total sperm count, decreased sperm vitality and decreased sperm motility, according to a Kaiser Permanente study appearing in the journal of Fertility and Sterility. The five-year study recruited 514 workers in factories in China and compared workers who had high urine BPA levels with those with low urine BPA. Men with higher urine...

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2010-08-12 06:25:00

Obesity in younger men may lead to lower sperm count, a new study reported in the journal Fertility and Sterility suggests. The findings add to evidence that ties obesity to relatively poorer quality sperm. Several recent studies have found that compared with thinner males, obese men tend to have lower sperm counts, fewer rapidly mobile sperm and fewer progressively motile sperm, which refers to sperm that swim forward in straight lines rather than swimming about aimlessly. But age is also...