Menstrual cycles are considerably varied with only 13% of women having cycles that last 28 days, according to a new study led by UCL and Natural Cycles, a contraceptive app.
Aug 26, 2019
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Fernando Ramirez Rozzi, a research director with the French National Centre for Scientific Research has found that the introduction of alcohol to a Baka pygmy hunter-gatherer society caused fertility rates to fall. In his ...
The development of every animal in the history of the world began with a simple step: the fusion of a spermatozoon (the male gamete) with an oocyte, or egg (the female gamete). Despite the ubiquity of this process, the actual ...
Feb 28, 2016
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The Zika virus reduces the size of testes in infected mice up to 21 days after infection, according to a new Yale study. The persistence of the virus in the male reproductive organ can lead to sexual transmission and may ...
Feb 23, 2017
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New research from Queen's University Belfast has uncovered the cause of infertility for 80 per cent of couples previously diagnosed with 'unexplained infertility'.
Nov 14, 2012
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As many as 15 percent of men have varicoceles, masses of enlarged and dilated veins in the testicles. There is new evidence that varicoceles, long known to be a cause of male infertility, interfere with the production of ...
Jun 16, 2011
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Infertility is generally thought of as a woman's problem. In fact, more than 3 million men across America also experience it. Today, researchers from Cold Spring Harbor Laboratory (CSHL) describe a key event during sperm ...
May 13, 2014
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Researchers from Columbia University Medical Center (CUMC) have found that the skeleton, acting through the bone-derived hormone osteocalcin, exerts a powerful influence on prenatal brain development and cognitive functions ...
Sep 26, 2013
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Researchers are developing a new way to test a woman's egg for chromosome abnormalities that avoids the need to manipulate and biopsy the egg itself. The research may also shed light on the crucial role played by certain ...
Jul 5, 2011
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A new study from Washington University School of Medicine in St. Louis identifies a specific gene's previously unknown role in fertility. When the gene is missing in fruit flies, roundworms, zebrafish and mice, the animals ...
Aug 31, 2020
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