A longer duration of infertility was associated with lower sperm count and other parameters of impaired sperm in a BJU International study of 1644 infertile men. Also, older age and higher body mass index were associated with a longer duration of infertility. Approximately 15 percent of couples of reproductive age fail to achieve a wanted […]Continue Reading ...
These are the results of an analysis of 28 nutritional intervention studies involving 2,900 participants and headed by the Universitat Rovira i Virgili; these supplements may increase male fertility Infertility affects 15% of the world population and is recognized by the World Health Organisation as a global health problem. In recent years, studies of sperm […]Continue Reading ...
Researchers have found that a protein in the cell membranes of sperm plays a key role in how they find their way to eggs. The PMCA protein may also help explain how egg cells only interact with sperm from the same species. PMCA may even be a target of drug discovery. Sperm are excellent navigators. […]Continue Reading ...
As prospective parents increasingly seek sperm donors online, an international study has analyzed what sort of men are donating sperm in this informal setting as opposed to a traditional clinic. And it seems a key characteristic is they are more agreeable. The international Journal of Reproductive and Infant Psychology has just published the latest study […]Continue Reading ...
A new study from the University of California suggests that if the epigenetics of sperm chromosomes are altered by the environment a father experiences, then this could affect offspring’s health. Image Credit: Yurchanka Siarhei / Shutterstock Using the roundworm Caenorhabditis elegans, Susan Strome and team showed how epigenetic marks on chromosomes or “epigenetic memory” […]Continue Reading ...
For couples hoping for a baby via in vitro fertilization, chances have improved. A process that once took hours now takes minutes: Cornell University scientists have created a microfluidic device that quickly corrals strong and speedy sperm viable for fertilization. Conventional methods to separate vigorous, motile sperm is tedious and may take up to several […]Continue Reading ...
August 17, 2018 In a study published in Behavioral Ecology researchers from Uppsala University show that the same type of sperm is not always the best for all male birds. Depending on how attractive or dominant you are you might be more successful with longer or shorter sperm. Getting a big family can be a […]Continue Reading ...
By Kate Bass BScJuly 26, 2018 New research indicates that small RNA in sperm controls the development of an embryo and is necessary for successful embryo implantation in the uterus. These findings have important implications for optimising fertility treatments. Image Credit: K_E_N / Shutterstock Infertility causes enormous emotional pain, which can impact every aspect of […]Continue Reading ...
Studies have repeatedly linked maternal smoking during pregnancy with reduced sperm counts in male offspring. Now a research team at Lund University in Sweden has discovered that, independently of nicotine exposure from the mother, men whose fathers smoked at the time of pregnancy had half as many sperm as those with non-smoking fathers. The study […]Continue Reading ...
Climate change could pose a threat to male fertility – according to new research from the University of East Anglia. New findings published today in the journal Nature Communications reveal that heatwaves damage sperm in insects – with negative impacts for fertility across generations. The research team say that male infertility during heatwaves could help […]Continue Reading ...
A single protein regulates a battery of key genes inside developing sperm, according to a new study out of Case Western Reserve University School of Medicine. Scientists discovered the protein–called Dazl–controls a network of genes essential for developing sperm to replicate and survive. The findings, published in Cell Reports, could lay the groundwork for future […]Continue Reading ...
Could doctors at fertility clinics be giving men bad advice? Dr. Da Li and Dr. XiuXia Wang, who are clinician-researchers at the Center for Reproductive Medicine of Shengjing Hospital in Shenyang in northeast China, think so. Recent research from Li’s and Wang’s lab, published in the journal Molecular and Cellular Proteomics, upends conventional wisdom that […]Continue Reading ...
Nearly one in eight couples in the U.S. face infertility, and about half of those cases can be attributed to semen abnormalities in the male partner. As the root causes often remain a mystery, new research into the basic biology behind sperm development could one day lead to renewed hope for those wanting to grow […]Continue Reading ...
By Dr Ananya Mandal, MDAugust 8, 2018 A new study from the Harvard’s T.H. Chan School of Public Health has shown that loose underwear such as boxers may be better for sperm counts in men when compared to tight ones such as briefs. Dr. Jorge Chavarro, associate professor of nutrition and epidemiology at Harvard, lead […]Continue Reading ...
What is a semen analysis? A semen analysis, also called a sperm count, measures the quantity and quality of a man’s semen and sperm. Semen is the thick, white fluid released from the penis during a man’s sexual climax (orgasm). This release is called ejaculation. Semen contains sperm, the cells in a man that carry […]Continue Reading ...
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