It is reported that food in the US market travels on average 1,500 miles between the farm and consumer.

The Leopold Center found that conventional food supply chain used about 10 times more fuel than for local products, hence 10 times more carbon dioxide released in the air or soil. In Canada, replacing imported food with items locally grown in the Waterloo, Ontario area would save as much CO2 emissions as the equivalent of removing 16,191 cars from the road, estimated a study.

Also, eating seasonal, less processed foods, which often means local field-grown produces, contributes to reduced carbon footprint, compared to the average American diet based on red meat and dairy. Cattle is such a source of significant greenhouse gas that Analysts at the Carnegie Mellon University state that replacing red meat and dairy with chicken, fish or eggs one day per week would save the equivalent of driving 760 miles per year whereas it would be like driving 1150 miles less if meat was replaced with vegetables.