Non-stick chemicals not tied to childhood growth

Credit: Metro File Photo.
Credit: Metro File Photo.

Babies’ early exposure to chemicals used in non-stick and stain-resistant products was not linked to small body size at age seven in a new study from Denmark looking at the chemicals’ effects on growth.

Previous research has tied prenatal exposure to elevated levels of perfluorinated chemicals, such as perfluorooctanesulfonate (PFOS) and perfluorooctanoate (PFOA), to both lower birth weights in boys and greater risk of obesity in young adulthood among both men and women.

Although the latest study did not find any effects on growth during childhood, Julie Herbstman, an assistant professor at Columbia Mailman School of Public Health who was not involved in the study, said, “I don’t think it’s definitive about the effects of prenatal exposure to perfluorinated compounds.”

Perfluorinated chemicals have been widely used in consumer products, from stain-resistant carpet to non-stick cookware and food packaging.

Companies in the U.S. have begun to phase out use of perfluorinated chemicals in response to health concerns, but the chemicals persist in the body and in the environment, taking years to break down.

To see whether exposure to these chemicals influences growth after birth, Camilla Schou Andersen at Bispebjerg and Frederiksberg University Hospital in Denmark and her colleagues tracked more than 800 children from the womb to seven years of age.

The researchers collected blood from mothers while they were pregnant and from the umbilical cord blood when the babies were born to determine the levels of perfluorinated chemicals the children were exposed to in utero.

Then, seven years later, the research group measured the children’s waists and overall body size.

The concentrations of perfluorinated chemicals the kids were exposed to before birth had no bearing on children’s growth later on, the researchers report in the American Journal of Epidemiology.

“Prenatal exposure to perfluoroalkyl acids may reduce the infancy weight and body mass index in boys, but the present results suggest that a growth deficit may be recovered between infancy and childhood,” they write.

Eight of the largest manufacturers of PFOA in the U.S. have agreed to eliminate products containing PFOA and emissions of the chemical by 2015.

The main producer of PFOS, 3M, eliminated the chemical from its products in 2002.

The Danish researchers note in their report that it’s possible perfluorinated chemicals have a greater effect during development than later in childhood. And that low-birthweight is itself associated with adult obesity risk, which could explain the link to later-life obesity seen in other studies.

Herbstman said the study was well conducted, but that it needs to be repeated in other populations to be able to say for sure that perfluorinated chemicals don’t affect children’s growth.

It’s also possible that the chemicals could affect children later in life, during puberty, because perfluorinated compounds are known to interfere with hormones and puberty is a time of significant hormonal changes, she added.

Moreover, body size later in life is not the only concern regarding the consequences of low birth weight, Herbstman pointed out.

“You worry about kids having cognitive problems, cardiovascular problems. Just because you’re not seeing an association with (body size) at age seven, this doesn’t reassure me these compounds are safe,” she said.


News
Entertainment
Sports
Lifestyle
National

Florida man charged with murdering son to play…

A Florida man annoyed that his 16-month-old crying son was preventing him from playing video games suffocated the toddler, police said on Friday.

International

Powerful 7.2 magnitude earthquake rattles Mexico

A powerful earthquake struck Mexico Friday, shaking buildings and sending people running into the street, although there were no reports of major damage.

News

OMG! Exercise can make skin (and butt) look…

A moderate exercise regime can turn back time and actually reverse the skin's aging process, according to new research. The study showed that a minimum…

Local

Oval oasis: Summer of fun kicks off this…

A bold partnership between the Fairmount Park Conservancy and the city's Parks and Recreation Department is kicking off this weekend with family activities re-activating this unused public space.

Entertainment

Whoopi Goldberg makes her debut as marijuana columnist

"It helps my head stop hurting, and with glaucoma your eyes ache, and she takes the ache out. It's wonderful," she said.

The Word

Kate Middleton made fun of Prince William's bald…

Kate Middleton and Prince William are in Sydney, Australia, right now, and it sounds like that brash Aussie sense of humor might be rubbing off.

The Word

Is Tom Cruise dating Laura Prepon?

"Mission: Impossible" star Cruise is said to be dating Laura Prepon, star of "Orange is the New Black."

Television

'Scandal' recap: Season 3, Episode 18, 'The Price…

Sally is Jesus, Olivia caused global warming, and Mellie's still drunk. Let's recap the Scandal finale. A church full of Washington insiders is about to…

MLB

Jimmy Rollins is key to Phillies success

When John Kruk was asked about what the Phillies need to contend for a playoff berth, the ESPN analyst said Jimmy Rollins needs to play like a MVP again.

MLB

Ben Revere lifts Phillies to avoid sweep

Ben Revere came through with a two-out RBI single against Atlanta’s tough lefthander Alex Wood.

NBA

Season wrap: 76ers make the grade

The 76ers opened the 2013-14 season with a victory over the Miami Heat. The Sixers closed the season with a win at Miami.

NBA

Fantasy basketball: Finding next year's NBA studs

Before we put the 2013-14 fantasy basketball season to bed, it’s worth thinking about next year’s breakouts while they’re fresh in our mind.

Tech

VIDEO: 'Vein-scanning' may become the future of paying

Designed to make transactions quicker and easier, the technology works by scanning the unique vein patterns in each person's palm.

Tech

#FollowFriday: 10 of the smartest Twitter accounts

Spending lots of time on Twitter? You might as well learn something. Here are some of the smartest accounts to follow.

Style

Light-up nail art syncs with phone

This Japanese technology syncs light-up nail art with your phone.

Wellbeing

Why is dance cardio taking off in NYC?

Instructors at some of the city's hottest classes explain why.