A few of its main conclusions are as follows:

1. Organic vs conventional: for many but not all foods the environmental impacts of organic foods are lower. There will be variation both by food type and by environmental impact category (eg. water, global warming potential etc).
2. Local vs global: no strong evidence to show that local has a lower environmental impact
3. Cold vs fresh vs preserved: chilled/frozen foods have a higher embedded energy than non chilled, but the conclusions are complicated by, among other things, the waste issue
4. Importance of transport: car based shopping and aviation are the main causes of concern
5. Meat and dairy products emerge as having a high global warming potential, most of which occurs at the livestock rearing stage.