Quantcast
Environmental News for a Healthier Planet and Life

Help Support EcoWatch

Air Pollution Reaches the Placenta During Pregnancy, New Study Finds

Health + Wellness
A pregnant woman works out in front of the skyline of London. SHansche / iStock / Getty Images Plus

Air pollution particles that a pregnant woman inhales have the potential to travel through the lungs and breach the fetal side of the placenta, indicating that unborn babies are exposed to black carbon from motor vehicles and fuel burning, according to a study published in the journal Nature Communications.


The research from scientists at Hasselt University in Belgium found soot-like black carbon on placentas donated by mothers, according to The Hill. It is the first study to show that the placental barrier, which is supposed to create a sterile environment for the fetus, can actually be penetrated by inhaled pollution particles.

Researchers have seen a link between polluted air and an increase in miscarriages, premature births and low birth weights. In fact, researchers found that after New Jersey and Pennsylvania replaced turnpike tollbooths with EZ Pass plazas, the rate of premature births and low birth weights dropped significantly within one mile of the plazas, leading to over $440 million in healthcare savings, according to a MacArthur Foundation study that NOVA reported on.

While the link between air pollution and adverse birth outcomes has been apparent, proving it was difficult since there was no way until now to show that pollutants breach the placenta. While the study, which used the placentas donated within 10 minutes of either a pre- or full-term birth, did not actually show that the babies absorb the black carbon, it is profound evidence that there is direct exposure to pollution, as NOVA reported.

"This is the smoking gun," said Janet Curie, a health economist at Princeton University who was not involved in the study, to NOVA.

The study found that the more black carbon a woman was exposed to, the more black carbon was detected on the placenta. Mothers who lived near a busy road had twice as much black carbon on the placenta than mothers who lived away from main roads, an average of 20,000 nanoparticles per cubic millimeter compared to 10,000, according to The Guardian.

Black carbon comes from a wide range of sources, including diesel engines, power plants, charcoal grills, kerosene lamps and open burning of farmland. However, stricter air quality standards in developed nations has led to precipitous drops in airborne black carbon, according to the Climate and Clean Air Coalition, which found that Asia, Africa, and Latin America — the regions with the highest birth rates — contribute 88 percent of global black carbon emissions.

Fetal damage has lifelong mental and physical health consequences. "This is the most vulnerable period of life," said Tim Nawrot, lead author of the Hasselt University study, according to The Guardian. "All the organ systems are in development. For the protection of future generations, we have to reduce exposure."

He added that while people should try to avoid busy roads, governments have the responsibility of cutting air pollution, as The Guardian reported.

While the study is small, since it examined only 25 placentas, "just finding it at the placenta is important," said Yoel Sadovsky of the University of Pittsburgh Medical Center, a leading placenta expert who was not involved with the new research, as the Associated Press reported. "The next question would be how much of these black carbon particles need to be there to cause damage."

EcoWatch Daily Newsletter

The CDC is warning that people with type 2 diabetes, kidney disease, whole organ transplants, and women who are pregnant could experience more severe outcomes if they contract COVID-19. LeoPatrizi / Getty Images
Read More Show Less

More than 200 Indigenous Nations demonstrated against the Dakota Access Pipeline in Canon Ball, ND on Sept. 2, 2016. Joe Brusky / Flickr

A federal judge ruled Monday that the controversial Dakota Access pipeline must be shut down and drained of oil until a full environmental review of the project is completed.

Read More Show Less
The Yersinia pestis bacteria causes bubonic plague in animals and humans. Illustration based on light microscope image At 1000x. BSIP / UIG Via Getty Images

A herdsman in the Chinese autonomous region of Inner Mongolia was diagnosed with the bubonic plague Sunday, The New York Times reported.

Read More Show Less
Plant pathologist Carolee Bull works in her home garden in State College, Pennsylvania. Carolee Bull, CC BY-ND

By Matt Kasson, Brian Lovett and Carolee Bull

Home gardening is having a boom year across the U.S. Whether they're growing their own food in response to pandemic shortages or just looking for a diversion, numerous aspiring gardeners have constructed their first raised beds, and seeds are flying off suppliers' shelves. Now that gardens are largely planted, much of the work for the next several months revolves around keeping them healthy.

Read More Show Less
Hotter temperatures have been linked to a rise in energy poverty, with more people struggling to meet their energy bills from their household income. Flickr / CC by 2.0

By Emma Charlton

The effects of climate change may more far-reaching than you think.

Hotter temperatures have been linked to a rise in energy poverty, with more people struggling to meet their energy bills from their household income, according to a new study published on ScienceDirect by researchers from Italy's Ca' Foscari University.

Read More Show Less
Naegleria fowleri (commonly referred to as the "brain-eating amoeba") is a free-living microscopic amoeba (single-celled living organism). Centers for Disease Control

As if the surging cases of coronavirus weren't enough for Floridians to handle, now the state's Department of Health (DOH) has confirmed that a person in the Tampa area tested positive for a rare brain-eating amoeba, according to CBS News. The Florida DOH posted a warning to residents to remind them of the dangers of the rare single-celled amoeba that attacks brain tissue.

Read More Show Less

Trending


Scientists are urging the WHO to revisit their coronavirus guidance to focus more on airborne transmission and less on hand sanitizer and hygiene. John Lund / Photodisc / Getty Images

The World Health Organization (WHO) is holding the line on its stance that the respiratory droplets of the coronavirus fall quickly to the floor and are not infectious. Now, a group of 239 scientists is challenging that assertion, arguing that the virus is lingering in the air of indoor environments, infecting people nearby, as The New York Times reported.

Read More Show Less