I inhaled traffic fumes to find out where air pollution goes in my body
Summary
A BBC Radio 4 presenter conducted an experiment to see how traffic fumes affect the body by inhaling polluted air and examining blood samples. Scientists found tiny pollution particles, known as PM 2.5, attaching to red blood cells. The study aims to understand how air pollution affects health and where these particles travel within the body.Key Facts
- The experiment took place in London, where the presenter stood by heavy traffic for 10 minutes.
- Air pollution mostly comes from vehicle exhaust, tire wear, and brake dust.
- Small particles called PM 2.5 were found attached to red blood cells.
- These particles are smaller than 2.5 micrometers and come from incomplete fuel burning.
- On average, one out of every two to three thousand red blood cells had pollution particles.
- Researchers estimate about 80 million red blood cells might carry pollution in an adult's body.
- After breathing clean air, pollution levels in the blood decrease after around two hours.
- The study suggests that some pollution particles might leave the body through urine.
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