from Streetsblog Capitol Hill by Catherine Lutz
Gerontologists in a laboratory at the University of Southern California exposed a group of mice to the same atmospheric conditions that humans encounter when driving along the freeway. Horrifyingly, they discovered that the mice’s brains showed the kind of swelling and inflammation associated with diseases such as Alzheimer’s. The researchers didn’t super-dose to get these results: the mice were exposed to freeway air for the equivalent of 15 hours a week– less than the 18.5 hour average Americans spend in their cars. Jokes aside about getting those darn mice off the road, the study suggests that driving less can reduce our risk of brain damage.
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The UCLA mouse study joined other recent reports that highlight the variety of ways in which remaining overly reliant on the private automobile is self-destructive. But these reports should also make clear that changes in individual behavior can alleviate some of the problems. Here’s just a sampling:
- The obese are at increased risk of injury in a car crash, according to University of Michigan researcher Jonathan Rupp, and the percentage of the population that is obese is rising. The automotive press presented this as a problem faced by the industry, rather than exacerbated by it. Their answer, of course, is not to encourage more walking and biking but to push for improved safety equipment so that drivers can stay obese and stay on the road.
- Sitting for long stretches greatly increases the risk of heart disease – even if you exercise afterwards – according to a study in the Journal of the American College of Cardiology. It may come as no surprise that sitting isn’t good for your health, but what’s shocking is that the raft of articles following the study tended to ignore active transportation while advocating improbable solutions such as standing treadmill desks. What’s more practical than replacing some of our long hours planted in the driver’s seat with walking, biking, or getting by foot to public transit stops?
- While there was some good news in the American Lung Association’s 2011 State of the Air Report, as one commentator put it, it was “like getting a 53 on your math test after you got a 49 on your last one.” Half of Americans live in areas in which air quality is unhealthy. The ALA points out that the elderly, the young, and the sick are most vulnerable to the effects of pollution. And of course some of the sick—such as those suffering from asthma and heart disease—can trace the very causes of their conditions to air pollution.
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https://dc.streetsblog.org/2011/05/17/this-is-your-brain-on-cars%e2%80%94oh-and-your-lungs-and-heart-and-gut-too/oldId.20110517142225566