Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Mitigating the greenhouse gas emissions of food through realistic consumer choices
AU - Hoolohan, Claire
AU - Berners-Lee, Mike
AU - McKinstry-West, James
AU - Hewitt, C. N.
PY - 2013/12
Y1 - 2013/12
N2 - The greenhouse gas (GHG) emissions embodied in 66 different food categories together with self-reported dietary information are used to show how consumer choices surrounding food might lead to reductions in food-related GHG emissions. The current UK-average diet is found to embody 8.8 kg CO2e person−1 day−1. This figure includes both food eaten and food wasted (post-purchase). By far the largest potential reduction in GHG emissions is achieved by eliminating meat from the diet (35% reduction), followed by changing from carbon-intensive lamb and beef to less carbon-intensive pork and chicken (18% reduction). Cutting out all avoidable waste delivers an emissions saving of 12%. Not eating foods grown in hot-houses or air-freighted to the UK offers a 5% reduction in emissions. We show how combinations of consumer actions can easily lead to reductions of 25% in food related GHG emissions. If such changes were adopted by the entire UK population this would be equivalent to a 71% reduction in the exhaust pipe emissions of CO2 from the entire UK passenger car fleet (which totalled 71 Mt CO2e year−1 in 2009).
AB - The greenhouse gas (GHG) emissions embodied in 66 different food categories together with self-reported dietary information are used to show how consumer choices surrounding food might lead to reductions in food-related GHG emissions. The current UK-average diet is found to embody 8.8 kg CO2e person−1 day−1. This figure includes both food eaten and food wasted (post-purchase). By far the largest potential reduction in GHG emissions is achieved by eliminating meat from the diet (35% reduction), followed by changing from carbon-intensive lamb and beef to less carbon-intensive pork and chicken (18% reduction). Cutting out all avoidable waste delivers an emissions saving of 12%. Not eating foods grown in hot-houses or air-freighted to the UK offers a 5% reduction in emissions. We show how combinations of consumer actions can easily lead to reductions of 25% in food related GHG emissions. If such changes were adopted by the entire UK population this would be equivalent to a 71% reduction in the exhaust pipe emissions of CO2 from the entire UK passenger car fleet (which totalled 71 Mt CO2e year−1 in 2009).
KW - Food
KW - climate change
KW - Greenhouse gas emissions
U2 - 10.1016/j.enpol.2013.09.046
DO - 10.1016/j.enpol.2013.09.046
M3 - Journal article
VL - 63
SP - 1065
EP - 1074
JO - Energy Policy
JF - Energy Policy
SN - 0301-4215
ER -