"...Though reducing plastic-bag use might be good for the environment, encouraging the re-use of plastic bags for food-toting may not be so healthy for humans. After San Francisco introduced its ban on non-compostable plastic bags in large grocery stores in 2007, researchers discovered a curious spike in E. coli infections, which can be fatal, and a 46% increase in deaths from food-borne illnesses, according to a study published in November 2012 by the University of Pennsylvania and George Mason University. "We show that the health costs associated with the San Francisco ban swamp any budgetary savings from reduced litter," the study's authors observed.
Affirming this yuck factor, a 2011 study from the University of Arizona and Loma Linda University found bacteria in 99% of reusable polypropylene bags tested; 8% of them were carrying E. coli. The study, though it mainly focused on plastic bags, also looked at two cotton reusable bags—and both contained bacteria."
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I bring my own reusable bags to the grocery most of the time. The above cited studies and article raises new questions of what is skillful and appropriate on an individual and societal/political level.
