Quantcast
Environmental News for a Healthier Planet and Life

Vehicle Pollution Could Increase Risk of Childhood Obesity

Health + Wellness
Prayitno / Flickr / CC BY 2.0

From ear infections to loss of intelligence, it's become increasingly clear that air pollution can affect more than just our lungs.

Now, a study from University of Southern California researchers suggested that early exposure to traffic pollution increases the risk of childhood obesity in later life, adding more evidence that dirty air is a public health threat to children.


As the Guardian reported from the study, babies exposed to high levels of nitrogen dioxide in the first year of life gained weight much faster, according to the analysis of 2,318 children in southern California. By the age of 10, those children were on average 2.2 pounds heavier than those with low exposure.

The researchers came to this conclusion after adjusting for age, sex, race/ethnicity, parental education and other factors.

"Beyond mid-childhood exposures, early life periods like in utero and first year of life represent critical windows of air pollution exposure that may significantly alter childhood growth trajectories," the study states.

Nitrogen dioxide is produced as a result of road traffic and when fossil fuels such as coal, oil, gas or diesel are burned at high temperatures.

The researchers were unable to exactly explain how air pollution causes weight gain in children.

"The most common thought is inflammation of body systems like the lungs which may spill over into the entire body [and] the brain, which regulates appetite and changes in fat metabolism," Jennifer Kim, who led the research, told the Guardian.

This is not the first study to make this connection. Last month, the World Health Organization issued a report that said that air pollution kills an estimated 600,000 children every year and causes a range of symptoms, including obesity and insulin resistance in children, Reuters reported.

"This study showing an association between increased body mass in children and exposure to air pollution from roads is important since it is compatible with previous studies showing an association between type 2 diabetes and air pollution in adults," Jonathan Grigg, a professor at Queen Mary University of London who was not involved with the research, explained to the Guardian.

"However, more research is needed to explain how toxins inhaled into the lungs affect fat cells throughout the body," Grigg added.

EcoWatch Daily Newsletter

The CDC has emphasized that washing hands with soap and water is one of the most effective ways to prevent the spread of COVID-19. Guido Mieth / Moment / Getty Images

The Centers for Disease Control has emphasized that washing hands with soap and water is one of the most effective measures we can take in preventing the spread of COVID-19. However, millions of Americans in some of the most vulnerable communities face the prospect of having their water shut off during the lockdowns, according to The Guardian.

Read More Show Less
A California newt (Taricha torosa) from Napa County, California, USA. Connor Long / CC BY-SA 3.0

Aerial photos of the Sierra Nevada — the long mountain range stretching down the spine of California — showed rust-colored swathes following the state's record-breaking five-year drought that ended in 2016. The 100 million dead trees were one of the most visible examples of the ecological toll the drought had wrought.

Now, a few years later, we're starting to learn about how smaller, less noticeable species were affected.

Read More Show Less
Sponsored
Disinfectants and cleaners claiming to sanitize against the novel coronavirus have started to flood the market.
Natthawat / Moment / Getty Images

Disinfectants and cleaners claiming to sanitize against the novel coronavirus have started to flood the market, raising concerns for the U.S. Environmental Protection Agency (EPA), which threatened legal recourse against retailers selling unregistered products, according to The New York Times.

Read More Show Less
A customer packs groceries in reusable bags at a NYC supermarket on March 1, 2020. Eduardo Munoz Alvarez/Getty Images

The global coronavirus pandemic has thrown our daily routine into disarray. Billions are housebound, social contact is off-limits and an invisible virus makes up look at the outside world with suspicion. No surprise, then, that sustainability and the climate movement aren't exactly a priority for many these days.

Read More Show Less
Ingredients are displayed for the Old School Pinto Beans from the Decolonize Your Diet cookbook by Luz Calvo and Catriona Rueda Esquibel. Melissa Renwick / Toronto Star via Getty Images

By Molly Matthews Multedo

Livestock farming contributes to global warming, so eating less meat can be better for the climate.

Read More Show Less