Changing food consumers' choices may help cut greenhouse gases Planet-warming greenhouse gas emissions associated with the global food supply chains induced by diets could fall by 17% if people change their food choices towards more plant-based diets, according to a new study. Within countries, consumer groups with higher expenditures generally cause more dietary emissions due to higher red meat and dairy intake. “Diet shifts need increased food consumption, but Sub-Saharan Africa, as well as South and Southeast Asia, have experienced stagnating agriculture production efficiency for decades and cannot produce nor afford to import the required food. The study evaluates the unequal distribution of dietary emissions (including land-use and beyond-farm emissions) from 140 food products in 139 countries or areas, covering 95% of the global population. It uncovers the extent of inequality of dietary emissions within countries based on detailed expenditure data.