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23 Aug

Delaying Fatherhood Reduces Fertility, Study Finds.

Paternal age significantly impacts the chance of a successful birth after in vitro fertilization, researchers say.

Health News Results - 64

Age Can Impair a Man's Odds for Fatherhood: Study

It's no surprise to hear that women's fertility wanes as their biological clock ticks away.

But do men have a biological clock, too?

New research shows it's not exactly the same, but their likelihood of fathering a child does appear to decline, even with assisted reproductive technology, once they're past age 50.

Research completed among potential fathers both above and...

Gene-Based Embryo Selection: Are 'Designer Babies' on the Horizon?

The notion of parents picking out genetically perfect babies may seem like science fiction, but bioethicists warn in a new report that some companies have already started to offer couples going through in vitro fertilization (IVF) the means to pick better embryos through polygenic scoring.

Polygenic scores are a "weighted average of the contributions of all of the genes we have informatio...

Kids Born Through Fertility Treatments Have No Higher Cancer Risk

Good news for couples considering fertility treatments: Children born through assisted reproductive technology (ART) don't have an increased risk of cancer, researchers say.

In the new study, kids born through high-tech fertility treatments -- such as in vitro fertilization (IVF) and frozen embryo transfer (FET) -- were followed for 18 years on average.

The results should be "quite ...

No Sign Prior COVID Infection Affects a Woman's Fertility: Study

COVID-19 infection doesn't reduce the chances of successful fertility treatment in women, a small new study suggests.

Concerns have been raised about how the virus affects women's fertility because it invades its target cells by binding to the ACE2 receptor, which is widely expressed in the ovaries, uterus, vagina and placenta, the Spanish researchers explained.

Their study followed...

Fertility Drugs Won't Raise Breast Cancer Risk

Women battling infertility are often given medications to help them conceive, and potential side effects are always a concern. Now, research suggests use of the drugs won't raise a woman's odds for breast cancer.

Researchers at King's College London in the United Kingdom analyzed studies from 1990 to January 2020 that included 1.8 million women of all reproductive ages who underwent ferti...

Animal Study Suggests COVID-19 Can Infect Testes

The new coronavirus infected the testes of hamsters in a study that adds to growing evidence that COVID-19 strikes more than just the lungs.

The findings could have important implications for men's health, the researchers said, although research in animals does not always translate to humans.

But the study authors noted that some male COVID-19 patients have reported testicular pain ...

Pfizer, Moderna Vaccines Do No Harm to Male Fertility: Study

The Pfizer and Moderna COVID vaccines pose no threat to male fertility, a finding experts hope will prompt more men to get vaccinated.

Researchers noted that the original clinical trials of the two mRNA vaccines didn't assess how they might affect fertility.

"Vaccine hesitancy is a barrier to ending the COVID-19 pandemic, and we believe some of that hesitancy is due to public opinio...

Heavy Drinking Could Lower a Woman's Odds of Conception

Heavy drinking reduces a woman's chances of getting pregnant, and even moderate drinking during the second half of the menstrual cycle is associated with a reduced likelihood of conceiving, according to a new study.

The new research involved 413 American women aged between 19 and 41 who were recruited between 1990 and 1994 and followed for a maximum of 19 menstrual cycles. The findings we...

Will Pandemic Produce a Summer Baby Boom?

America, get ready for a baby boom.

That's the likelihood anyway, according to a new forecast that suggests a drop in pregnancy and birth rates seen during the early part of the COVID-19 pandemic is about to be reversed.

"We expect a dramatic rebound soon," said study lead author Dr. Molly Stout. She is maternal fetal medicine director at Michigan Medicine Von Voigtlander Women's Ho...

FDA Warns of Bogus Fertility Claims for Some Supplements

Women who are struggling to get pregnant, beware of false dietary supplements that claim to help cure infertility and other reproductive health issues.

Such supplements are not approved by the U.S. Food and Drug Administration and they could prevent patients from seeking effective, approved drugs, the agency warned.

"These purported fertility aids seek to profit off of the vulnerabi...

New Treatment May Help Women in Early Menopause Remain Fertile

An experimental treatment may restore fertility during early menopause, a small new study claims.

Typically, menopause ends a woman's ability to get pregnant. But researchers report that administering platelet-rich plasma and hormones, called gonadotropins, might stimulate ovulation to make pregnancy possible.

"The most surprising finding in this work is awakening the s...

What Is Endometriosis, and How Is It Treated?

There's no cure for endometriosis, but women have several treatment options for the painful condition, an expert says.

With endometriosis, tissue that normally lines the inside of the uterus grows outside of it, where it can reach the fallopian tubes, ovaries, bowel, bladder, diaphragm and, more rarely, other parts of the body. It can reduce fertility.

Symptoms can include chronic p...

Scientists Create First Lab Model of Human 'Pre-Embryo' for Research Purposes

Research into miscarriages, infertility and birth defects is now primed to undergo revolutionary advances, thanks to the creation in the lab of an early stage of human embryos by two separate international teams of scientists.

Both teams were able to use human cells to create artificial blastocysts, an early stage of conception that occurs a few days after egg fertilization but prior...

Women With Type 1 Diabetes May Have Fewer Childbearing Years: Study

Women with type 1 diabetes may have a shorter length of time to conceive and bear children compared to those without the disease, new research suggests.

The hormone insulin plays an important part in regulating female reproductive function, and people with type 1 diabetes don't make enough insulin on their own. But little was known about how type 1 diabetes affects the start of menopause,...

Fertility Treatments Might Affect Kids' Growth, But Not for Long

The growth patterns of kids born through fertility treatment differ initially from those conceived naturally, but those growth rates do catch up over time, a new study finds.

In-vitro fertilization and other forms of "assisted reproductive technology" (ART) has long been associated with lower birth weights in babies, but it wasn't clear how long differences in growth continue.

To fi...

Fresh Embryos Beat Frozen for IVF: Study

When it comes to in vitro fertilization, new research suggests fresh is best.

In the study, researchers analyzed data from 33,000 women who received fresh or frozen embryos derived from freshly retrieved donor eggs.

The data was from 370 in vitro fertilization clinics in the United States that account for more than 95% of all assisted reproduction nationwide.

Women who receive...

Pot Might Impair a Woman's Fertility: Study

Though using marijuana for medical or recreational reasons is legal in a growing number of U.S. states, it may come with some unexpected side effects.

A new study found that women who use cannabis may be reducing their fertility.

"Cannabis use has continued to climb. More and more states have legalized it in recent years," said Sunni Mumford, an investigator at the U.S. National Ins...

Vasectomy Reversal Just as Successful in Men Over 50

Vasectomy reversal is as viable in men over 50 as in those who are younger, a new study says.

About 20% of American men who have a vasectomy want to father children in the future, and about 6% will seek a vasectomy reversal, previous research shows.

However, it's been unclear how a man's age may affect his chance for a successful reversal.

To find out, researchers analyzed the...

Heart Disease Is World's No. 1 Killer

Heart disease is the leading cause of death worldwide -- accounting for one-third of deaths in 2019 -- and the death toll continues to rise, a new paper says.

China had the highest number of heart disease deaths last year, followed by India, Russia, the United States and Indonesia. Heart disease death rates were lowest in France, Peru and Japan, where rates were six times lower than in 19...

Many Breast Cancer Survivors Have Healthy Babies: Study

When a young woman is diagnosed with breast cancer, many questions go through her mind.

What treatments does she need? Will she survive? And will she still be able to have a baby?

In a review of recent research, an international team of investigators say the answer to that critical third question is yes. Though breast cancer survivors are less likely to become pregnant than the ave...

Frozen Eggs Help Breast Cancer Survivors Conceive

Freezing their eggs or ovarian tissue before breast cancer treatment increases survivors' chances of having children after recovery, a new study finds.

Nearly 10% of breast cancer cases occur in women younger than 45 years of age, some of whom haven't yet had children, according to researchers at the Karolinska Institute in Sweden.

Treatment often includes chemotherapy, which can da...

IVF Won't Raise Ovarian Cancer Risk: Study

Fertility treatments such as in vitro fertilization don't appear to increase a woman's risk of ovarian cancer, a new study finds.

Previous studies suggested that women who used this assisted reproductive technologies (ART) such as IVF to get pregnant may be at risk for ovarian cancer and non-malignant borderline tumors, due to increased levels of sex hormones needed to stimulate egg produ...

Odds of Pregnancy in IVF Same With Frozen or Fresh Embryos: Study

Whether a frozen or fresh embryo is transferred during fertility treatments, the odds of pregnancy are roughly the same, according to a new Danish study involving nearly 500 women.

Fresh embryo transfer, however, should still be the gold standard in assisted reproduction for women, the research team said.

There was one exception to that rule, however: Women who are at ri...

A New 'Spin' on How Sperm Swim

If you ever had a sex-ed class in school, you have probably seen a visual of sperm swimming with a wagging tail. Now, high-tech tools have shattered that view of how sperm move.

More than 300 years ago, a Dutch scientist used an early microscope to observe human sperm in motion. He saw that they appeared to swim using a tail that moved from one side to the other.

But scient...

What's the Best 'Uterine-Sparing' Treatment for Fibroids?

Two "uterine-sparing" treatments for fibroids can improve women's quality of life -- though one might be more effective than the other, a new clinical trial suggests.

Fibroids are non-cancerous growths in and around the wall of the uterus that are usually harmless. But when they cause significant problems, like persistent pain and heavy menstrual bleeding, treatment may be necessary.<...

Changes in IVF May Have Spurred Drop in Cerebral Palsy, Study Says

Rates of cerebral palsy among babies in Nordic countries born through in vitro fertilization (IVF) have fallen by more than half over the past two decades, due to fewer twin births from IVF, according to a new study.

A study in Denmark 15 years ago found a significantly increased risk of cerebral palsy in infants born through IVF. The absolute risk was small, but cerebral palsy was th...

Shorter Storage of Frozen Embryos Tied to Pregnancy Success: Study

Vitrification is a safe way to freeze and store embryos during fertility treatment, but the longer embryos are stored, the less likely women are to get pregnant and have a live birth, a new study from China suggests.

In vitrification, embryos are briefly placed in a dehydrating solution, then fast-frozen to prevent damaging ice crystals from forming.

Some experts feared the ...

A Woman's Egg May Prefer One Man's Sperm Over Another's: Study

People have certain qualities they look for in a mate, and now a new study finds that a woman's eggs may be choosy about sperm, too.

Researchers said the findings offer new insight into human reproduction -- showing that eggs will not accept just any sperm, and actually have more say in the union than previously recognized.

In the moments just before fertilization, there is ...

What Are Your Chances of Having a Second IVF Baby?

If you've had one baby through fertility treatment, your chances for a second success are good, a new study suggests.

Researchers analyzed data from more than 35,000 women in Australia and New Zealand who had a live baby after in vitro fertilization (IVF).

The women were treated between 2009 and 2013 and followed to 2015. Live births up to October 2016 were included in the ...

Can Men Dine Their Way to Higher Sperm Counts?

Listen up, guys: A healthy diet is good for your brain and heart, and also your sperm, new research suggests.

In a study of more than 2,900 Danish men, median age 19, those whose diet was rich in fish, chicken, vegetables, fruit and water had higher sperm counts than those who ate a "Western" diet rich in pizza, French fries, processed and red meats, snacks, refined grains, sugary be...

First Baby Born From Use of Lab-Matured Frozen Egg

In what doctors call a breakthrough, a cancer patient in France gave birth to the first baby conceived from an immature egg that was matured in the laboratory, frozen, then later thawed and fertilized.

"We were delighted that the patient became pregnant without any difficulty and successfully delivered a healthy baby at term," said team leader Michaël Grynberg, head of reproduct...

Fresh Donor Egg Better Than Frozen for IVF: Study

Fresh donated eggs appear to be better for in-vitro fertilization (IVF) than frozen ones, a new study suggests.

Donor eggs provide the best chance of success for many women undergoing IVF, according to the authors.

But it wasn't clear whether using fresh or frozen donor eggs in IVF improves the chances of success, so a team from the University of Colorado and Duke University...

Allow Dead Men to Be Sperm Donors, Medical Ethicists Say

Should a dying man be allowed to let doctors harvest his sperm for possible use by strangers after death? Yes, say two medical ethicists in the United Kingdom.

Writing in an article published Jan. 20 in the Journal of Medical Ethics, Drs. Nathan Hodson and Joshua Parker said that such donations would be akin to the organ donor process.

"If it is morally acceptable th...

Fish Oil Supplements Might Help Men Become Dads

Couples struggling to get pregnant might want to add a little more fish in their diet, a new study says.

Young men who take fish oil supplements appear to have better sperm quality and higher testosterone levels than those who don't, as well as larger testicles, researchers report.

Although it wasn't tested as part of the study, all these male reproductive factors should lea...

Male Fertility Supplements Fail to Deliver

Supplements containing zinc and folic acid don't appear to boost male fertility, a new study finds.

Despite marketing claims, these supplements don't improve pregnancy rates, sperm counts or sperm function, researchers say.

"Our results suggest that these dietary supplements have little to no effect on fertility and may even cause mild gastrointestinal symptoms," researche...

'Designer Babies' a Long Way Off

"Designer babies" aren't going to be a reality anytime soon, researchers say.

Concerns about genetically altering embryos to have desired traits have been around nearly as long as in vitro fertilization (IVF) and the technology to screen embryos have existed.

But while recent live births resulting from embryonic CRISPR gene editing have re-focused attention on the issue, the...

Chlamydia Can Harm Male Fertility

Undiagnosed chlamydia infection can harm male fertility, a new study suggests.

"Chlamydia infection has been associated with women's infertility but much less is known about its impact on male infertility, particularly if men do not experience symptoms, which is estimated to be in about 50% of cases," said study leader Ken Beagley, a professor of immunology at Queensland Universit...

Twins Are Becoming Less Common in U.S., for Good Reasons

No, you're not seeing double as often these days: After decades of rising, twin births are declining in the United States.

Twin birth rates had been on the rise for 30 years, but dropped 4% between 2014 and 2018, health officials said in a new U.S. government study. That's the lowest level in more than a decade. In 2018, there were 32.6 twins for every 1,000 U.S. births.

Link Seen Between Infertility, Prostate Cancer

Could male infertility contribute to a higher risk for prostate cancer?

Yes, according to new Swedish research that suggests that men who become fathers through assisted reproduction treatments may be more likely to develop prostate cancer in midlife.

The conclusion follows a review of data collected by a Swedish national registry between 1994 and 2014. In all, 1 million chi...

Older Parents May Have Better Behaved Kids

Many people wait until they're older to have children, and that decision can raise the risk of problems like infertility and genetic abnormalities. But new research suggests there may be at least one benefit to having children later in life.

The study found that kids with at least one older parent were less likely to be defiant rule-breakers or physically aggressive.

"Older...

In a U.S. First, Baby Is Delivered From Womb Transplanted From Deceased Donor

Doctors at the Cleveland Clinic announced that they've achieved a first in North America: delivering a baby from a uterus that had been transplanted from a deceased donor.

The healthy baby girl was delivered by C-section in June. This is only the second time such a delivery has happened worldwide, the first having occurred in Brazil in December.

"We couldn't have asked for a...

When It Comes to Treating Infertility, Race, Education and Income Matter

If you struggle with infertility, chances are you will be twice as likely to get treatment for the heartbreaking condition if you are white, college-educated or affluent.

So claims a new study that analyzed data from more than 2,500 women aged 20 to 44 who took part in the U.S. National Health and Nutrition Examination Survey between 2013 and 2016.

Nearly 12.5% of the wo...

Sperm Seems to Survive Just Fine in Space, Study Shows

The reality of humans getting reproductive help in space just got a little bit closer.

Scientists in Spain report frozen sperm samples subjected to space-like gravity conditions were as viable as those that remained on Earth, a finding that could eventually lead to sperm banks in space.

The results "open the possibility of safely transporting [sperm] to space and considerin...

Fertility Treatment Tied to Deadly Heart Problem in Pregnancy: Study

The risk of a pregnancy-related type of heart failure is five times higher for women who undergo fertility treatment than those who conceive naturally, a new study says.

The condition is called peripartum cardiomyopathy (PPCM). It affects about 1 in 1,000 pregnant women worldwide and is life-threatening to the mother and baby.

This study included 111 women with PPCM and was ...

Older Dads' Sperm Isn't What It Used to Be

Just because a guy can make babies later in life doesn't mean it's risk-free.

The partners and children of men who become fathers at an older age are at increased risk for health problems, a new study finds.

"While it is widely accepted that physiological changes that occur in women after 35 can affect conception, pregnancy and the health of the child, most men do not realiz...

What Couples Considering IVF Need to Know

In vitro fertilization (IVF) is widely used in the United States to help infertile couples have children. But there are a number of things people should know when considering it, an infertility specialist says.

"Many factors … can affect the success of an IVF cycle, but many people view IVF as their safety net that ensures they can have a child anytime," said Dr. Rashmi Kudesia...

Male-Hormone Gene May Help Cause Polycystic Ovary Syndrome

Polycystic ovary syndrome is a common cause of infertility and type 2 diabetes, but little is known about its origins. Now, new research suggests a gene involved in male hormone production plays a big role in the disorder's development.

"We're starting to make headway on what causes PCOS [polycystic ovary syndrome]. It's very frustrating for patients because it's poorly understood," ...

Gender Pay Gap Significant Among Infertility Doctors

In the medical world of baby-making, males rule.

A new study finds that female obstetrician-gynecologists who specialize in reproductive endocrinology and infertility get paid far less than their male colleagues.

Researchers at the University of Colorado Anschutz Medical Campus note that far more women than men go into obstetrics-gynecology in the United States, but women ma...

Supplemental Steroids, Testosterone May Lower Men's Sperm Counts

Men who abuse hormones such as testosterone or steroids for bodybuilding can have declines in sperm and testosterone production, researchers say.

The good news: these changes seem to reverse once men stop hormone overuse.

While the use of nonprescribed male hormones (androgens) has surged in many wealthy countries, there has been little research into their effect on men's r...

Opioid Overuse Can Lower Hormones to Harmful Levels

Add one more issue to the growing list of harms from opioid abuse: Long-term use may lead to hormone deficiencies that affect a man's health.

Researchers reviewed the latest medical evidence and found that about two-thirds of men using opioids for more than six months develop hypogonadism, which is insufficient testosterone production.

The review also found that about one in...

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