Semen News and Research

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Semen is an organic fluid, also known as seminal fluid, that usually contains spermatozoa. It is secreted by the gonads (sexual glands) and other sexual organs of male or hermaphroditic animals and can fertilize female ova. The process of discharge is called ejaculation.

Marijuana use may increase risk of testicular cancer

Frequent and/or long-term marijuana use may significantly increase a man's risk of developing the most aggressive type of testicular cancer, according to a study by researchers at Fred Hutchinson Cancer Research Center.

9 Feb 2009

Male circumcision may help prevent human papillomavirus infection

Two new studies suggest that male circumcision may assist in the prevention of human papillomavirus (HPV) infection, particularly infection with the high-risk subtypes associated with cervical, penile, and other cancers.

17 Dec 2008

Seychelles flies could reveal evolutionary step to live birth

A species of fruit fly from the Seychelles Islands often lays larvae instead of eggs, UC San Diego biologists have discovered.

24 Nov 2008

Overhaul of sperm donation services needed to increase supply

A radical overhaul of sperm donation services is needed to address the critical shortage of sperm donors in the UK, say two fertility experts in an editorial on bmj.com.

12 Nov 2008

Five key proteins form new, early-warning blood test before heart attack strikes

A team of Johns Hopkins biochemists has identified a mixed bag of five key proteins out of thousands secreted into blood draining from the heart's blood vessels that may together or in certain quantities form the basis of a far more accurate early warning test than currently in use of impending heart attack in people with severely reduced blood flow, or ischemia.

10 Nov 2008

Scientists grow prostates from mouse stem cells

A team of molecular biologists in the U.S. have grown complete prostates derived from stem cells in the prostates of mice and they say the experiment represents a big step towards regenerating organs from a patients' own cells.

23 Oct 2008

FDA approves Rapaflo for treatment of symptoms due to benign prostatic hyperplasia

The U.S. Food and Drug Administration today approved Rapaflo (silodosin) capsules for the treatment of symptoms due to benign prostatic hyperplasia (BPH), a condition also known as an enlarged prostate.

12 Oct 2008

Australian men picking HIV up from unsafe sex overseas

A conference in Perth, Australia, has heard that six men in Cairns have contracted HIV after travelling to Papua New Guinea and the news has alarmed health authorities and raised concern that there may be more undetected cases in the area.

17 Sep 2008

Hunt for baby denied HBV shot

Authorities in New South Wales, Australia, continue to search for a couple who have refused to have their newborn baby immunised against hepatitis B.

25 Aug 2008

Commonly used fertility drug useless

British scientists say that using the drug Clomid for the treatment of unexplained infertility is no more effective than no treatment at all.

11 Aug 2008

Soyfoods Association response to research on soy in men

Headlines claiming "soy products lower sperm count" do not tell the whole story. The small scale, preliminary study that Dr. Jorge Chavarro, published online in Human Reproduction, is based on recollected intake of soyfoods and not on specific diets containing soyfoods.

24 Jul 2008

A dangerous precedent in HIV

Infection with HIV could quadruple in certain populations if people with HIV follow potentially misleading advice contained in a statement from the Swiss Federal Commission for HIV/AIDS, University of New South Wales (UNSW) research warns.

24 Jul 2008

Soy lowers sperm levels

Men who eat an average of half a serving of soy food a day have lower concentrations of sperm than men who do not eat soy foods, according to research published online in Europe's leading reproductive medicine journal, Human Reproduction, today (Thursday 24 July). The association was particularly marked in men who were overweight or obese, the study found.

23 Jul 2008

New hope for infertile men - venous embolization

A minimally invasive treatment for a common cause of male infertility can significantly improve a couple's chances for pregnancy, according to a new study published in the August issue of Radiology. The study, conducted at the University of Bonn in Germany, also found that the level of sperm motility prior to treatment is a key predictor of success.

22 Jul 2008

Obesity can cause fertility problems in men

According to new research obese men have lower volumes of seminal fluid and a higher proportion of abnormal sperm.

10 Jul 2008

Diabetes effects sperm quality

Diabetes in men has a direct effect on fertility, a scientist told the 24th annual conference of the European Society of Human Reproduction and Embryology today (Wednesday 9 July).

9 Jul 2008

Obese men have less seminal fluid and more abnormal sperm

Obese men should consider losing weight if they want to have children, a scientist told the 24th annual conference of the European Society of Human Reproduction and Embryology today (Wednesday 9 July).

9 Jul 2008

After 35 reproductive clock ticks for men too

A new study by researchers in France has revealed that after the age of 35 men too experience a loss of fertility.

7 Jul 2008

Pregnancy rates decrease and miscarriages increase when a father is over 35

Pregnancy rates decrease and miscarriages increase when a father is over 35 years of age, a scientist will tell the 24th annual conference of the European Society of Human Reproduction and Embryology (Monday 7 July). Dr. Stephanie Belloc, of the Eylau Centre for Assisted Reproduction, Paris, France, will say that this is the first time that such a strong paternal effect on reproductive outcomes has been shown.

6 Jul 2008

Warning about lack of attention given to hepatitis

A report by the World Hepatitis Alliance has called for an increased focus on hepatitis and says the disease should be given the same attention as AIDS, tuberculosis and malaria.

20 May 2008