A sustainable diet to be able to feed everyone in 2050, limiting the environmental impact.
According to research of the World Resources Institute (WRI), it is enought that the average American reduced the consumption of meat and dairy products to halve the environmental impact of food production, in terms of land use, water and impact on climate.
More generally, it comes to finding solutions to feed a growing world population, which currently features a 70% gap between the current food production and demand expected in 2050.
The switch to diets with a higher content of vegetables could reduce this gap of 30%.
The research, entitled Shifting Diets for a Sustainable Food Future, indicates that this can be achieved by switching from beef to pork or poultry with beans.
WRI makes the comparative example of cattle and beans.
For every gram of protein, a bovine, which is distinguished by its high environmental impact, it consumes 20 times more land and generates greenhouse gas emissions 20 times higher than the beans.
Many people, especially in rich countries, consume more protein, compared to as they may need, and therefore, the study says, can reduce meat and dairy products, easily meeting their protein needs.
The average American man, for example, takes about 100 grams of protein per day, that is almost twice the amount he needs (56 grams).
The proteins that already takes from vegetable such as beans, cereals, soybean and vegetables, are slightly lower to his requirements.