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Significant heterogeneity may exist in the same categorical group of smoking, for example, a current smoker with only 1-year history of cigarette smoking has more similar cumulative effects with a non-smoker rather than a current smoker with 20-year history of smoking
Im Gwynedd, Sporkeds managing editor
According to the American Lung Association, pet allergens "remain suspended in the air for a long time, much longer than allergens from cockroaches or dust mites." Dust mites, on the other hand, "cling to particles that are too heavy to remain in the air for long" and settle into things like pillows, bedding, and furniture "within minutes." In my experience, air purifiers aren't an infallible cure for pet allergies, but they can certainly help
Just last year, a three-part investigative story broke on a local news station
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