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.

Adolescents at greater risk of violence, injury during sexual assaults than previously believed

A recent study of the forensic evidence in 563 sexual assault cases in Massachusetts found "striking similarities" in the types of injuries and violence experienced by adult and adolescent victims.

31 May 2019

Stress during early pregnancy may reduce future fertility of offspring

Stressful events during early pregnancy could be detrimental to the reproductive development of male offspring, according to new research.

30 May 2019

Prostate cancer marker activates growth factors that contribute to tumor spread

A new study indicates that PSA, a prostate cancer marker, is one of the catalysts that activate vascular endothelial and lymphangiogenic growth factors which contribute to the spread of cancer.

25 May 2019

Sperm quality among Swiss men in ‘critical state’, say experts

Swiss men have the worst quality sperm in Europe, with 17 percent of Swiss men being considered “sub-fertile”, according to new research.

24 May 2019

Disease transmissible from dogs to humans shows up in Iowa

A commercial dog breeding centre in Marion County, Iowa has been the originating point for several cases of canine brucellosis says the state veterinarian, Dr. Jeff Kaisand. The disease is transmissible from dogs to humans say experts.

13 May 2019

Men who delay fatherhood put health of partners, unborn children at risk

Men who delay starting a family have a ticking "biological clock" -- just like women -- that may affect the health of their partners and children, according to Rutgers researchers.

13 May 2019

Chemical-sampling wristbands detect similar exposures across three continents

To assess differences and trends in personal chemical exposure, Oregon State University researchers deployed chemical-sampling wristbands to individuals on three continents.

23 Apr 2019

Recurrent pregnancy loss may be caused by sperm DNA damage, finds study

Some cases of recurrent pregnancy loss may be caused by sperm DNA damage in the male partner, rather than by a problem in affected women, according to research to be presented Sunday, March 24 at ENDO 2019, the Endocrine Society's annual meeting in New Orleans, La.

25 Mar 2019

Researchers investigate whether Zika reservoirs are found in the Americas

Most emerging infectious diseases affecting people are zoonotic -- they make the jump from other animals to humans.

20 Mar 2019

World's oldest semen viable for artificial insemination

Semen stored since 1968 in a laboratory in Sydney has been defrosted and successfully used to impregnate 34 Merino ewes, with the resulting live birth rate as high sperm frozen for just 12 months.

18 Mar 2019

Ebola survivors in Liberia have higher prevalence of health issues, study shows

Survivors of Ebola virus disease in Liberia had a higher prevalence of certain health issues--including uveitis (eye redness and pain), abdominal, chest, neurologic, and musculoskeletal abnormalities upon physical exam--when compared to a control group of household and community members who did not have a history of EVD, according to findings from an ongoing study published in the New England Journal of Medicine.

8 Mar 2019

Sperm quality not affected by one course of postoperative treatment for early testicular cancer

Men with early stage testicular cancer can safely receive one course of chemotherapy or radiotherapy after surgery without it having a long-term effect on their sperm count, according to a study published in the leading cancer journal Annals of Oncology today (Monday).

25 Feb 2019

Smoking cannabis may increase sperm count

A new study has found that men who have smoked cannabis at some point in their lives have higher sperm counts than men who have never smoked the drug.

7 Feb 2019

Study: Maternal age, body mass index, race affect hormone concentrations in pregnancy

Hormone concentrations during early fetal development -- that may affect the child's development and increase the mother's risk for breast and ovarian cancer years later -- are significantly affected by maternal age, body mass index and race rather than lifestyle, according to a Rutgers study.

5 Feb 2019

Scientists are working to develop a new way to detect Zika virus

A collaboration of scientists including Professor Jean Patterson, Ph.D., of Texas Biomedical Research Institute, is working on a new way to detect Zika virus that will help guide clinicians in their treatment of patients with the disease.

28 Jan 2019

Reassuring findings on the link between antidepressants and fertility

Based on limited research, there's no strong evidence that selective serotonin-reuptake inhibitors (SSRIs) - the most widely used class of antidepressants - have an adverse impact on fertility, according to a paper in the Harvard Review of Psychiatry.

25 Jan 2019

Scientists aim to find genetic causes of developmental abnormalities in the vagina and uterus

A percentage of females are born with a missing or underdeveloped vagina and uterus, and scientists are working to analyze the genes of hundreds of them to get a better idea about causes, improve genetic counseling and ideally treatment.

22 Jan 2019

One reason behind frequent miscarriages could be faulty sperms

Scientists at the Imperial College in London have found that one of the reasons behind frequent miscarriages in a woman could be the fault of the sperms of their partners. Recurrent miscarriages are defined as three or more miscarriages that occur before 20 weeks of pregnancy are completed. One in 50 couples in the UK are affected by recurrent miscarriages.

6 Jan 2019

Sperm health may play a role in recurrent miscarriages

The early-stage study, from scientists at Imperial College London, investigated the sperm quality of 50 men whose partners had suffered three or more consecutive miscarriages.

4 Jan 2019

New book encompasses the vast history of reproduction

A new book is the first to encompass the vast history of how living things procreate, from the banks of the ancient Nile to the fertility clinics of today.

7 Dec 2018