Diet-related greenhouse gas emissions assessed by a food frequency questionnaire and validated using 7-day weighed food records

摘要

BackgroundThe current food system generates about 25 % of total greenhouse gas emissions (GHGE), including deforestation, and thereby substantially contributes to the warming of the earth’s surface. To understand the association between food and nutrient intake and GHGE, we therefore need valid methods to assess diet-related GHGE in observational studies.