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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.
Study links poor semen quality to higher risk of various health conditions

Study links poor semen quality to higher risk of various health conditions

A study of more than 9,000 men with fertility problems has revealed a correlation between the number of different defects in a man's semen and the likelihood that the man has other health problems. [More]
Exposure to chemicals used in UOG operations may affect reproductive and developmental health

Exposure to chemicals used in UOG operations may affect reproductive and developmental health

Unconventional oil and gas (UOG) operations combine directional drilling and hydraulic fracturing, or "fracking," to release natural gas from underground rock. Recent discussions have centered on potential air and water pollution from chemicals used in these processes and how it affects the more than 15 million Americans living within one mile of UOG operations. [More]
Prenatal exposure to phthalate DiNP associated with shorter AGD in Swedish boys: Study

Prenatal exposure to phthalate DiNP associated with shorter AGD in Swedish boys: Study

The first study to examine prenatal exposure to the phthalate DiNP finds it is associated with a shorter anogenital distance (AGD) in Swedish boys at the age of 21 months. These findings raise concern since animal research has linked DiNP exposure to a shorter AGD, and studies on humans have related shorter AGD to male genital birth defects as well as impaired reproductive function in adult males, and the levels of DiNP metabolites in humans are increasing globally. [More]
New research suggests that exposure to aluminium may reduce male fertility

New research suggests that exposure to aluminium may reduce male fertility

And the team of scientists, at the universities of Lyon and Saint-Etienne in France and Keele in the UK, found that the higher the aluminium, the lower sperm count. [More]
Researchers awarded grant to develop non-invasive device to detect Human Cytomegalovirus

Researchers awarded grant to develop non-invasive device to detect Human Cytomegalovirus

Researchers from Cardiff and Swansea Universities have been awarded a grant of more than £323k to develop a new, non-invasive, low-cost, and easy to use point of care device to diagnose Human Cytomegalovirus (HCMV). [More]
Family physician  answers questions related to Ebola virus

Family physician answers questions related to Ebola virus

According to the Centers for Disease Control, the outbreak of Ebola in four West African countries is one of the largest outbreaks of the disease in history. [More]
Facial masculinity negatively associated with semen quality

Facial masculinity negatively associated with semen quality

Contrary to what one might expect, facial masculinity was negatively associated with semen quality in a recent Journal of Evolutionary Biology study. [More]
Semi-soft vaginal suppository provides drug-delivery vehicle to prevent spread of HIV

Semi-soft vaginal suppository provides drug-delivery vehicle to prevent spread of HIV

A unique method for delivering compounds that could positively impact the global battle against HIV and AIDS may be possible, thanks to researchers in Penn State's College of Agricultural Sciences. [More]
Loyola’s free prostate cancer screenings on September 17

Loyola’s free prostate cancer screenings on September 17

As part of Prostate Cancer Awareness Month, Loyola University Medical Center will offer free prostate cancer screenings on Wednesday, Sept. 17. [More]
Study provides insights into interplay among bacteria, viruses and immune system during HIV infection

Study provides insights into interplay among bacteria, viruses and immune system during HIV infection

A new study led by the Translational Genomics Research Institute provides insights into the interplay among bacteria, viruses and the immune system during HIV infection. [More]
Study reveals how HIV virus spreads infection

Study reveals how HIV virus spreads infection

Research led by the University of Adelaide has provided new insights into how the HIV virus greatly boosts its chances of spreading infection, and why HIV is so hard to combat. [More]
Age of sperm donor does not affect outcome in terms of live birth

Age of sperm donor does not affect outcome in terms of live birth

Despite emerging evidence of a decline in sperm quality with increasing age, an analysis of every first fertility treatment cycle performed in the UK using sperm donation shows that outcome in terms of live birth is not affected by the age of the sperm donor. [More]
Study examines effect of phthalate exposure in humans’ sperm epigenetics

Study examines effect of phthalate exposure in humans’ sperm epigenetics

A new three-year, $440,000 study led by environmental health scientist Richard Pilsner at the University of Massachusetts Amherst is now underway to investigate whether phthalate levels in expectant fathers have an effect on the couples' reproductive success, via epigenetic modifications of sperm DNA. [More]
Certain molecules in seminal fluid indicate presence and severity of prostate cancer

Certain molecules in seminal fluid indicate presence and severity of prostate cancer

Improved diagnosis and management of one of the most common cancers in men - prostate cancer - could result from research at the research at the University of Adelaide, which has discovered that seminal fluid (semen) contains biomarkers for the disease. [More]
Cannabis use affects size and shape of sperm in young men

Cannabis use affects size and shape of sperm in young men

Young men who use cannabis may be putting their fertility at risk by inadvertently affecting the size and shape of their sperm according to research published today (Thursday 5 June 2014). [More]
Men who feel stressed have fewer, slower sperm

Men who feel stressed have fewer, slower sperm

Psychological stress is harmful to sperm and semen quality, affecting its concentration, appearance, and ability to fertilize an egg, according to a study led by researchers Columbia University's Mailman School of Public Health and Rutgers School of Public Health. [More]
Birth defects do not appear to be associated with father's semen quality, says study

Birth defects do not appear to be associated with father's semen quality, says study

Birth defects do not appear to be associated with the father's semen quality, according to a new study at the 109th Annual Scientific Meeting of the American Urological Association (AUA). [More]
Men with sperm abnormalities at increased risk of dying sooner, study finds

Men with sperm abnormalities at increased risk of dying sooner, study finds

Men who are infertile because of defects in their semen appear to be at increased risk of dying sooner than men with normal semen, according to a study led by a researcher at the Stanford University School of Medicine. [More]
Study characterizes mechanisms of pathogenesis, transmission of bacteria that cause gonorrhea

Study characterizes mechanisms of pathogenesis, transmission of bacteria that cause gonorrhea

Researchers have come a step closer to understanding how gonorrhea infections are transmitted. When Neisseria gonorrhoeae, the bacteria responsible for gonorrhea, are exposed to seminal plasma, the liquid part of semen containing secretions from the male genital tract, they can more easily move and start to colonize. [More]
New video tracking system could help select most viable sperm

New video tracking system could help select most viable sperm

To improve their chances of success, in vitro fertilization (IVF) clinics need to assess the viability of the sperm they use. Now doctors may soon have a new technique to help them sort the good sperm cells from the less viable ones: a tracking system, developed by a team of researchers from four European institutions, that takes 3-D movies of living sperm. [More]