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Shifty shades of semen

Frequent or vigorous ejaculation is commonly reported to cause discolouration and changes in the texture of semen. Ironically, it is also well recognised that sexual abstinence for long periods can result in disruption of the vessels, causing blood in the ejaculate. ....

World Health Organization , Health Organization , Colours Of Semen , Sexual Health , Reproductive Health , உலகம் ஆரோக்கியம் ஆர்கநைஸேஶந் , ஆரோக்கியம் ஆர்கநைஸேஶந் , வண்ணங்கள் ஆஃப் விந்து , பாலியல் ஆரோக்கியம் , இனப்பெருக்கம் ஆரோக்கியம் ,

Opinion | What Are Sperm Telling Us?

Something alarming is happening between our legs.
Sperm counts have been dropping; infant boys are developing more genital abnormalities; more girls are experiencing early puberty; and adult women appear to be suffering declining egg quality and more miscarriages.
It’s not just humans. Scientists report genital anomalies in a range of species, including unusually small penises in alligators, otters and minks. In some areas, significant numbers of fish, frogs and turtles have exhibited both male and female organs.
Four years ago, a leading scholar of reproductive health, Shanna H. Swan, calculated that from 1973 to 2011, the sperm count of average men in Western countries had fallen by 59 percent. Inevitably, there were headlines about “Spermageddon” and the risk that humans would disappear, but then we moved on to chase other shiny objects. ....

United States , Andrea Gore , Washington State University , Cancer Panel , Endocrine Society , Pediatric Endocrine Society , World Health Organization , University Of Texas At Austin , Environmental Working Group , Ann Hunt , Environmental Working , Endocrine Gland , Us Politics , Regulation And Deregulation , Shannah Swan , ஒன்றுபட்டது மாநிலங்களில் , ஆண்ட்ரியா கார் , வாஷிங்டன் நிலை பல்கலைக்கழகம் , புற்றுநோய் குழு , நாளமில்லா சமூகம் , குழந்தை நாளமில்லா சமூகம் , உலகம் ஆரோக்கியம் ஆர்கநைஸேஶந் , பல்கலைக்கழகம் ஆஃப் டெக்சாஸ் இல் ஆஸ்டின் , சுற்றுச்சூழல் வேலை குழு , ஆண்டு வேட்டை , சுற்றுச்சூழல் வேலை ,

Cryptic sex: How female and unisexual animals reproduce 'asexually' — without males

Author:
Root Gorelick
(MENAFN - The Conversation) Not all species need sperm to fertilize an egg for sexual reproduction. Some species need sperm in order to induce completion of egg nucleus development, but then never use the sperm s DNA. I describe how this self-sexual reproduction occurs in many animals, including some insects, molluscs, fish, amphibians and reptiles, but not mammals.
People have long understood that ejaculate is needed for human pregnancy, but did not understand much more. In the late 1600s, the Dutch scientist Antonie van Leeuwenhoek, who was one of the first microbiologists, thought his own sperm were parasites . ....

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Male fruit flies win genetic race with rivals in post-mating fertilization game

Male fruit flies win genetic race with rivals in post-mating fertilization game
Scientists have accepted natural selection as a driver of evolution for more than 160 years, thanks to Charles Darwin.
But University of Cincinnati biologist Michal Polak says Darwin s book The Descent of Man only tells part of the story. Sometimes when the victor vanquishes his sexual rival, the quest to pass genes to the next generation is just beginning.
According to a new UC study published in the journal
Current Biology, male fruit flies with the most impressive sexual ornamentation also have super sperm that can outcompete that of rivals in the post-mating fertilization game. ....

Charles Darwin , Joshua Benoit , Michal Polak , Kassie Hooker , Emily Henderson , University Of Cincinnati , Sudy Co , Uc College Of Arts , National Science Foundation , Current Biology , Victorian England , National Science , Sudy Co Author , Assistant Professor , Next Generation , சார்லஸ் டார்வின் , ஜோஷுவா பெனாய்ட் , மைக்கேல் போலக் , காஸ்ஸி ஹூக்கர் , எமிலி ஹென்டர்சன் , பல்கலைக்கழகம் ஆஃப் ஸிந்ஸந்யாடீ , சூடி இணை , அக் கல்லூரி ஆஃப் கலைகள் , தேசிய அறிவியல் அடித்தளம் , தற்போதைய உயிரியல் , விக்டோரியன் இங்கிலாந்து ,

Zinc could help with fertility during the COVID-19 pandemic - Add these five zinc-rich foods to your diet

Updated Feb 07, 2021 | 12:19 IST
According to reports, researchers have said that zinc supplements for both men and women, who are attempting to conceive can assist in reproduction during the pandemic.
Zinc could help with fertility during the COVID-19 pandemic - Add these five zinc-rich foods to your diet | Photo Credit: iStock Images
Key Highlights
Zinc may play a major role in fertility, as per recent studies
Here are some zinc-rich foods you should add to your diet
New Delhi: The COVID-19 pandemic has taken a toll on the physical and mental health of people. As per reports, fertility among men and women has also been hugely affected due to the pandemic. While some studies have found that the disease can cause damage to the sperm, the rise in stress due to the virus has also contributed to fertility issues. A new study has now found a way to combat such ill-effects of the pandemic, on fertility. ....

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