Health care activities contributed 8% of US GHG emissions in 2007, according to the Nov. 11 issue of the Journal of the American Medical Association. A study by Chung and Meltzer quantifies the carbon footprint of the US health care sector using the Environmental Input-Output Life Cycle Assessment model developed at the Carnegie Mellon University and 2007 data on health expeditures. In comparison, the National Health Service contributed 3% of UK's CO2 emissions (percentage of GHGs might have been slightly higher). Reducing the carbon footprint of health care will require finding leverage points in the health care delivery supply chains where net health benefits can be maximized while minimizing environmental damage.
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