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BREAKING
FERTILITY NEWS
Treatments of Coast Reprodutive Male Fertility Supplement (Fertile One) with Vitamins C and E, considered as therapy to decrease DNA Fragmentation.
Fertility and Sterility® Vol. 87, No 1, January 2007
Sperm deoxyribonucleic acid fragmentation as a prognostic indicator of assisted reproductive tchnology outcome. p93.
"Progressive Motility" declines at a rate of 3.1% a year for men.
"Faulty DNA can lead to health problems for men."
"Everything you didn't want to know about sex…"
Greenpeace report reveals the impact of toxic chemicals on reproductive health. (PDF) 28k
"Doctors
Say Men in Mid-30s Suffer From Slipping Fertility"
"Men’s
biological clock ticks, too"
MEETINGS
AND EVENTS
Pacfic
Coast Reproductive Society
Palm Springs, California | April 18-22, 2007
Canadian Fertility and Andrology Society
Halifax, Nova Scotia | September 26-29, 2007
American
Society of Reproductive Medicine
Washington D.C. | October 13-17, 2007 |
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INFERTILITY
AND SUPPORT SITES
It seems that it's not just women who have a "biological clock" controlling their fertility, as new research confirms that men have one too, although it appears to tick a little more slowly. "Progressive motility" describes a sperm's ability to swim fast and aim hard at its goal - the egg. Results of a study by Brenda Eskenazi and colleagues at the University of California in Berkeley found that that this "progressive motility" declines at a rate of 3.1% a year. Thus as men get older their sperm slow down and become less goal-orientated - seemingly preferring to swim in circles instead. A woman's fertility is known to drop significantly around her mid-30s. In the past, it was thought that men did not experience such a marked drop in fertility, however the results of this study suggest that a 30-year-old man has roughly a 50% chance of having abnormal progressive motility. By 50, the chances of abnormal progressive motility increase to 67%, and by 80 to 84%.
Scientists at the University of California at San Francisco discovered that some infertile men showed a DNA repair problem. DNA, the genetic code that makes humans who they are, usually has its own repair system to protect the body from developing disease. But if broken, faulty DNA can lead to health problems. This same DNA problem associated with infertility in men, researchers report, is also associated with tumor growth. The research team compared 10 men, five with normally functioning testes and five whose testes produced little or no sperm. The latter group showed a 100-fold higher rate in DNA errors than the men with normal testes. The researchers also point to previous studies involving animals. When genes responsible for DNA repair were altered in mice, the mice developed tumors and also became infertile. Researchers encourage further studies, particularly to determine whether men with this type of faulty DNA who undergo assisted reproduction may pass the faulty DNA on to the child, thereby placing the child at increased risk for developing cancer.
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