Obesity linked to poor sperm quality

Posted by Neill Abayon

Young men now have a new incentive to stay lean and fit. According to a new report in the journal Fertility and Sterility, overweight young men have poorer sperm quality than their peers of a more healthy weight do.

The findings reveal that not only do overweight men have lower sperm counts, but their sperm are less mobile and less able to travel in the right direction as opposed to simply swimming aimlessly. In other words, overweight men between the ages of 20 and 30 may have a much harder time becoming fathers than leaner, fitter men will.

Researchers say it is unclear whether or not the difference in sperm quality is significant enough to affect overall fertility, but they believe that it could, and that further research is necessary.

For the study, Dr. Uwe Paasch and his team from the University of Leipzig in Germany analyzed more than 2,000 men who had visited fertility clinics between 1999 and 2005 to test their sperm quality. None of these men had any known fertility problems at the time.

Read the full article here.

Daily sex helps to reduce sperm DNA damage and improve fertility

Posted by Neill Abayon

Amsterdam, The Netherlands: Daily sex (or ejaculating daily) for seven days improves men's sperm quality by reducing the amount of DNA damage, according to an Australian study presented today (Tuesday) to the 25th annual meeting of the European Society of Human Reproduction and Embryology in Amsterdam.

Until now there has been no evidence-based consensus amongst fertility specialists as to whether or not men should refrain from sex for a few days before attempting to conceive with their partner, either spontaneously or via assisted reproduction.

Dr David Greening, an obstetrician and gynaecologist with sub specialist training in reproductive endocrinology and infertility at Sydney IVF, Wollongong, Australia, said: "All that we knew was that intercourse on the day of ovulation offered the highest chance of pregnancy, but we did not know what was the best advice for the period leading up to ovulation or egg retrieval for IVF.

"I thought that frequent ejaculation might be a physiological mechanism to improve sperm DNA damage, while maintaining semen levels within the normal, fertile range."

Read the full article here.

Cyclists 'risk infertility'

Posted by Neill Abayon

Professional cyclists should consider freezing their sperm before embarking on their careers, say researchers.

They found sperm quality drops dramatically with rigorous training.

The Spanish study of top triathletes found those who cover more than 186 miles (300km) a week on their bikes have less than 4% normal looking sperm.

At such levels, men would have "significant fertility problems", the European Society of Human Reproduction and Embryology heard.

However, a UK expert said the average man cycling to work would be unlikely to suffer fertility problems because of their time in the saddle.

Study leader Professor Diana Vaamonde, from University of Cordoba Medical School in Spain said other studies had shown very high levels of exercise affected fertility in both men and women.

Read the full article here.

Semen quality depends upon antioxidants

Posted by Neill Abayon

Low antioxidant intake is associated with low reproductive capacity in semen. This is the finding of a new study carried out in two infertility centres in Alicante and Murcia, and which has been published online in the journal Fertility and Sterility.

"Our previous research study, published in March, showed that men who eat large amounts of meat and full fat dairy products have lower seminal quality than those who eat more fruit, vegetables and reduced fat dairy products. In this study, we have found that people who consume more fruits and vegetables are ingesting more antioxidants, and this is the important point", Jaime Mendiola, lead author of the article and a researcher at the University of Murcia, tells SINC.

The experts have spent the past four years analysing the link between dietary habits or workplace exposure to contaminants and the quality of semen among men attending fertility clinics.

The objective was to find out whether a higher or lower intake of vitamins, which act as antioxidants, could affect semen quality. These molecules, which are present in foods such as citrus fruits, peppers and spinach, work by lowering the level of oxidative stress that can affect semen quality, and improve sperm concentration parameters as well as sperm mobility and morphology.

Read the full article here.

Is Water Pollution Making You Infertile?

Posted by Neill Abayon

New research strengthens the link between water pollution and rising male fertility problems. The study, by Brunel University, the Universities of Exeter and Reading and the Centre for Ecology & Hydrology, shows for the first time how a group of testosterone-blocking chemicals is finding its way into UK rivers, affecting wildlife and potentially humans. The research was supported by the Natural Environment Research Council and is now published in the journal Environmental Health Perspectives.

The study identified a new group of chemicals that act as ‘anti-androgens’. This means that they inhibit the function of the male hormone, testosterone, reducing male fertility. Some of these are contained in medicines, including cancer treatments, pharmaceutical treatments, and pesticides used in agriculture. The research suggests that when they get into the water system, these chemicals may play a pivotal role in causing feminising effects in male fish.

Earlier research by Brunel University and the University of Exeter has shown how female sex hormones (estrogens), and chemicals that mimic estrogens, are leading to ‘feminisation’ of male fish. Found in some industrial chemicals and the contraceptive pill, they enter rivers via sewage treatment works. This causes reproductive problems by reducing fish breeding capability and in some cases can lead to male fish changing sex.

Read the full article here.

Could Acupuncture Improve Your Fertility?

Posted by Neill Abayon

When Rebecca Killmeyer experienced a miscarriage during her second pregnancy, she wasn't sure if she would ever have another baby. But then she decided to enter a study testing the impact of acupuncture on women with polycystic ovary syndrome (PCOS).

"To our great surprise we were blessed with a third pregnancy during the PCOS study," said Killmeyer. "I'm absolutely certain the acupuncture treatments helped me ovulate regularly, which allowed me to become pregnant."

PCOS causes a hormonal imbalance that interferes with ovulation and fertility. Acupuncture could be an important alternative, non-drug therapy for women with this disorder.

Read the full article here.