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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 recei...


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 inves...

The COVID-19 pandemic is taking a toll on the emotional health of pregnant women whose exercise routines have been disrupted because of the coronavirus, new research shows.

Those women had higher depression scores than their counterparts who were able to exercise as usual, the researchers found.

"Our results demonstrate that the COVID-19 pandemic may exacerbate the elevated risk th...

High blood pressure and pre-eclampsia during pregnancy may follow women through the years, causing lower scores on tests of memory and thinking skills, a Dutch study suggests.

The study of nearly 600 pregnant women included 481 with normal blood pressure and 115 who developed high blood pressure during their pregnancies.

Of those 115 women, 70% had gestational hypertension, which is...

Exposure to metals may disrupt pregnant women's hormones and boost the odds of complications such as preeclampsia, preterm birth and low birth weight, according to a new study.

Metals such as nickel, arsenic, cobalt and lead have been associated with pregnancy complications, but it's been unclear why.

"A delicate hormonal balance orchestrates pregnancy from conception to delivery an...

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...

A new study may prove reassuring for expectant moms: Pregnant women who are infected with COVID-19 during their third trimester appear unlikely to pass the infection to their fetuses.

This study was conducted between April and June 2020 among women who came to one of three Boston area hospitals either for treatment of COVID-19 or for delivery.

None of the newborns of the 127 pregnan...

Most pregnant women infected with the new coronavirus don't have symptoms, a new study shows.

Researchers analyzed data from a coronavirus screening program in the labor and delivery unit of Elmhurst Hospital in New York City during March and April.

Of the 130 pregnant women screened, one-third tested positive for the new coronavirus.

Of the women who tested positive, 72% d...

Although heart problems are rare complications of pregnancy, Black women face a heightened risk -- even if they have comfortable incomes and health insurance, a new study finds.

It's well established that the United States has a higher maternal mortality rate than other wealthy nations, and Black women are at greater risk than white women.

Less has been known about whether Black wom...

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...

COVID-19 may be behind a concerning rise in the number of women suffering anxiety and depression before and soon after childbirth, a new study says.

Researchers from Brigham and Women's Hospital in Boston surveyed more than 1,100 pregnant and postpartum women between May 21 and Aug. 17. They found that 36%, or more than 1 in 3, had significant levels of depression. Prior to the pandemic,...

Pregnancy can be exhilarating or exhausting, and sometimes both at the same time. It may not come as a surprise to a woman who has experienced pregnancy once, twice or many times, that it can age her.

New research reveals that how many pregnancies a woman has may affect just how much her body ages. And, as it turns out, women who have no babies — or many — seem to age faster than othe...

In the past 30 years, U.S. women have been in progressively worse physical shape as they become pregnant, a new study finds.

A combination of obesity, high blood pressure, diabetes and having children later in life have led to potentially more complications, and even infant and maternal death, researchers say.

Obesity is a major driver of these complications, said lead researcher Dr...

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...

Women with asthma may suffer fewer severe symptom attacks if they are on birth control pills, a large new study suggests.

The study of more than 83,000 women with asthma found that those who used birth control pills for at least three years tended to have fewer severe flare-ups.

The difference between pill users and non-users was small, and the findings do not prove a cause-and-effe...

The number of women who contemplate suicide or self-harm during or after pregnancy may be on the rise, a large, new study suggests.

Among nearly 600,000 U.S. childbearing women, researchers found that close to 2,700 were diagnosed with suicidality in the year before or after giving birth. And the diagnosis -- defined as suicidal thoughts or intentional self-harm -- grew more common over t...

Pregnant women with COVID-19 have little risk of developing severe symptoms, as do their newborns, a new study finds.

In fact, 95% of these women have good outcomes, and just 3% of their babies test positive for COVID-19, researchers say.

"For 5% of COVID-19-positive pregnant women, however -- those who get very sick -- the risks to both mother and baby are significant," said study ...

American women are far more likely to die from pregnancy-related causes than women in other wealthy countries -- and a national shortage of maternity care providers bodes ill for the future.

Those are some of the findings from a new report on maternal mortality by the nonprofit Commonwealth Fund, which compared the United States with 10 other high-income nations.

It found what the r...

When Obamacare made contraception affordable, the rate of unplanned pregnancies among poor Americans declined, a new study reports.

The Affordable Care Act's (ACA) elimination of out-of-pocket costs for birth control was tied to fewer births in all income groups, but especially among poorer women, the new research found. In fact, the lowest income group had a 22% decline in births after t...

Global warming could increase rates of serious pregnancy problems, researchers warn.

They analyzed 70 studies from 27 countries that reported associations between high temperatures and preterm birth, birth weight and stillbirths.

"Given increases in the frequency and intensity of heat waves, the number of pregnant women exposed to these conditions worldwide, and the significant...

New infection prevention practices started during the coronavirus pandemic have actually shortened hospital stays for mothers and their babies, a new study finds.

The changes included screening the temperature of all patients and visitors, limiting the number of visitors, providing staff with personal protective equipment, and new protocols for delivery management and newborn care.

...

The health of low-income women before they become pregnant has improved in states that expanded Medicaid under the Affordable Care Act (ACA), researchers report.

The time before a woman becomes pregnant is critical for her health and that of her infant, but many poor women don't have health insurance during this important period, the researchers noted.

Their study compared 10 major ...

Women who take the epilepsy medication valproic acid during pregnancy have more than twice the risk of having a child with autism, new research suggests.

The study also found that taking the drug during pregnancy almost doubled the odds that a child would have attention-deficit/hyperactivity disorder (ADHD), compared to children who weren't exposed to the drug during pregnancy.

"The...

Many women have depression symptoms after giving birth, but for some postpartum depression hangs on for years, a U.S. government study finds.

Of nearly 4,900 new mothers researchers followed, one-quarter had depression symptoms at some point in their child's first three years. And for about half of them, the symptoms either started early on and never improved, or took time to emerge.

...

Hispanic mothers-to-be in the southern United States are almost twice as likely to have COVID-19 as non-Hispanic women, a new study finds.

The researchers also found that those with government health insurance were more likely to test positive for the coronavirus than women with private insurance.

For the study, pregnant women were routinely tested for COVID-19 as they wen...

Most American women between 15 and 49 years of age use birth control, according to a new U.S. government report.

Between 2017 and 2019, 65% of those women used some form of contraception, according to the U.S. Centers for Disease Control and Prevention.

"This report provides this unique snapshot of all women of reproductive age at a point in time," said lead researche...

Women who suffer severe morning sickness may have higher risk of depression during and after pregnancy, according to a new British study.

It enrolled 214 women in London during the first trimester of pregnancy. Half had severe morning sickness; half did not. None had been treated for mental health conditions during the previous year.

The women's mental health was assessed in...

COVID-19 symptoms can last a long time in pregnant women, researchers say.

The new study included 594 pregnant women (average age 31) across the United States who tested positive for the new coronavirus but were not hospitalized. Nearly one-third were health care workers.

On average, the women were about 24 weeks' pregnant when they joined the study.

The most comm...

Pregnancy complications, including preeclampsia and miscarriage, may be linked to an increased risk of heart disease later in life, a new study suggests.

For the study, the researchers analyzed 32 reviews that assessed women of childbearing age and their subsequent risk of heart disease. The women in those papers were followed for an average of seven to 10 years.

Several rep...

Chrissy Teigen's public disclosure of her pregnancy loss is shining new light on a trauma for couples that's too often left in the shadows.

The 34-year-old model, cookbook author and social media star announced the loss of her baby boy via Twitter Thursday. She was thought to be halfway through a pregnancy with a baby she and her husband, singer John Legend, had already named Jack.

Metals and other air pollutants have been found in the placentas of new mothers, which means such pollutants may be able to reach the fetus, researchers report.

"Our study for the first time shows that inhaled carbon particulate matter in air pollution travels in the blood stream, and is taken up by important cells in the placenta. We hope that this information will encourage policy m...

Many women with severe migraines don't want to get pregnant because of concerns about their headaches, a new study finds.

Migraine, one of the world's leading causes of disability, particularly affects women of childbearing age.

Researchers surveyed 607 U.S. women afflicted with severe migraines. One in 5 said they're avoiding pregnancy due to their migraines.

Amon...

Pregnancy can delay the onset of multiple sclerosis (MS) by more than three years, researchers report.

The international study found those who'd been pregnant had their first MS symptoms an average of 3.3 years later than those who'd never been pregnant. Having carried a baby to term delayed MS onset by an average of 3.4 years, the researchers determined.

More than 2.5 milli...

COVID-19 may hit pregnant women especially hard, U.S. health officials warned in two reports.

In one report, scientists from the U.S. Centers for Disease Control and Prevention urge pregnant women and health care providers to be aware of the risks for severe COVID-19, which include serious birth outcomes.

Diagnosing COVID-19 during childbirth hospitalizations is important ...

Pregnant women are understandably worried about everything that goes into their bodies. But here's one worry they can cross off that list: flu shots.

A large, new study has confirmed that an expectant woman's flu shot doesn't increase the risk of autism in her child. And that's true even if the vaccine is given during the first trimester of pregnancy, the Swedish study found.

...

New insight into how pregnant women can pass the Zika virus to their fetus could point to ways to prevent it, researchers say.

Babies infected with Zika in the womb can have abnormally small heads (microcephaly) and other birth defects.

In this study, researchers examined placenta samples collected from pregnant women during the peak of Brazil's 2015 to 2016 Zika outbreak. S...

A new case study adds to growing evidence that the new coronavirus can be transmitted from a pregnant woman to her fetus.

"It's very important to bring to the forefront this finding that mothers and infants can be affected by COVID-19, transmission can occur during pregnancy, and pregnant mothers need to protect themselves," said Dr. Amanda Evans, senior author of the report.

<...

Women who are pregnant or trying to get pregnant may need to forgo coffee, tea, sodas and other sources of caffeine. A new data analysis finds no safe level of the drug during this time.

"The cumulative scientific evidence supports pregnant women and women contemplating pregnancy being advised to avoid caffeine," concluded study author Jack James, a professor at Reykjavik University...

As many expectant mothers can unhappily attest, the nausea and vomiting known as "morning sickness" can occur at any time of the day.

In a new study, British researchers analyzed diaries kept by 256 women from the day they learned they were expecting until the 60th day of their pregnancy.

While vomiting was most common between 7 a.m. and 1 p.m., nausea was likely all day lon...

Doctors have long suspected it, but a comprehensive new study provides more evidence that antibiotics can reduce the effectiveness of birth control pills.

That means women who are using both types of drugs at once should take extra precautions to avoid an unintended pregnancy, the study's British authors say.

The study couldn't prove cause and effect. However, it "suggests t...

For pregnant women experiencing painful gallstones, immediate surgery to remove the infected gallbladder may be better than postponing the operation until after childbirth, a new study suggests.

Acute gallbladder disease is called cholecystitis.

"Current guidelines recommend surgery for acute cholecystitis during pregnancy, but many patients and providers delay surgery," sa...

Obesity during pregnancy may hinder fetal brain development, a new study suggests.

Development of brain areas involved in decision-making and behavior may be affected as early as the second trimester, New York University researchers said.

For the study, the researchers examined nearly 200 groups of active nerve cells in the fetal brain.

"Our findings affirm that...

Research has shown that pot use during pregnancy may increase the risk of stillborn birth, preterm birth and low birth weight.

Now, a new study adds another danger: children whose mothers used pot while pregnant could be at greater risk for autism.

And the increased danger wasn't slight: Using data on every birth in Ontario, Canada, between April 2007 and March 2012, the Uni...

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...

The roar of jet engines may pose a hidden danger to babies: higher odds of premature birth tied to plane exhaust.

So finds a study showing that pregnant women exposed to high levels of pollution from the exhaust of jet planes are 14% more likely to deliver prematurely than women exposed to lower levels.

Researchers looked at exposure to small-particle air pollution amon...

Some key molecules used by the new coronavirus to cause infection aren't found in the placenta, which may explain why the virus is rarely detected in fetuses or newborns of women with COVID-19.

U.S. government researchers found that placental membranes lack the messenger RNA (mRNA) molecule required to make the ACE2 receptor. SARS-CoV-2 -- the virus that causes COVID-19 -- uses that c...

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 ...

The coronavirus pandemic is adding to the mood issues that many pregnant women and new moms experience, according to a new study.

One in 7 women experience anxiety or depression immediately before or after giving birth -- and researchers say the pandemic has made it even worse.

"The social and physical isolation measures that are critically needed to reduce the spread of the ...

Here's more bad news associated with climate change: Pregnant women exposed to air pollution or heat waves face a greater risk of having a preterm or underweight baby, a new research review finds.

The review, of 68 studies from across the United States, found that the large majority arrived at the same conclusion: Babies were at greater risk when their mothers lived in areas with poor...

Pregnant women with COVID-19 who deliver by cesarean section may be at greater risk for complications that affect them and their babies, new research suggests.

The study focused on 82 women with COVID-19 -- four of them with severe symptoms -- who gave birth in hospitals in Spain. Thirty-seven women delivered by cesarean section (C-section), including eight as a direct result of COVI...

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