Mounting evidence points to air pollution as a cause of eczema

[Pelican Press 0]

This is the hidden content, please

• Sign In
• or
• Sign Up

Mounting evidence points to air pollution as a cause of eczema

Air pollution is hard to avoid, particularly for city dwellers

Ron Adar/Alamy

Air pollution is increasingly being linked to a raised risk of eczema, with the latest study showing a clear relationship between the exposure and the skin condition.

Vehicles and power plants release pollutant particles with a diameter of 2.5 micrometres or less, called PM2.5.

This is the hidden content, please

• Sign In
• or
• Sign Up

, which is thought to be the result of an over-active immune system causing inflammation that makes skin dry and itchy.

To gather more evidence,

This is the hidden content, please

• Sign In
• or
• Sign Up

at the Yale School of Medicine and his colleagues analysed the medical records of more than 280,000 people, who were mostly in their 50s and took part in the

This is the hidden content, please

• Sign In
• or
• Sign Up

. This collects health data from a diverse group of people in the US, with an emphasis on those who are usually underrepresented in research, such as ******* minorities.

The researchers also looked at average PM2.5 levels where these people lived, using data collected in 2015 by the

This is the hidden content, please

• Sign In
• or
• Sign Up

in Virginia.

They then compared PM2.5 levels in 788 locations across the US against eczema cases, which were diagnosed up until mid-2022. They found that for every 10 microgram per cubic metre increase in PM2.5, eczema rates more than doubled. “In more polluted areas of the country, there was more eczema,” says Cohen.

The team accounted for factors that could affect the results, such as ethnicity and whether people smoked or had food allergies.

“The study brings forward the science by nicely showing a clear correlation in a large population,” says

This is the hidden content, please

• Sign In
• or
• Sign Up

at North Carolina State University. PM2.5 may trigger the immune system to cause inflammation when it comes into contact with skin, like pollen or dust mites can, says Valacchi. Inhaling it may also play a role, as this can ramp up inflammation around the body, he says.

This research should give governments another reason to enforce policies that reduce air pollution, says Cohen. Meanwhile, people living in polluted areas can reduce their risk by wearing long sleeves or staying indoors when pollution levels are particularly high, says Valacchi.

Topics:

This is the hidden content, please

• Sign In
• or
• Sign Up

#Mounting #evidence #points #air #pollution #eczema

This is the hidden content, please

• Sign In
• or
• Sign Up

This is the hidden content, please

• Sign In
• or
• Sign Up