She said raising awareness of the impact on the climate from meat production was the first step, but was unlikely to shift diets by itself.
Large gene banks, used to breed crops containing the best traits adapted to particular environments, together with public education to shift diets to new and more diverse foods suited to a warmer world, will be crucial, the scientist noted.
The five steps (freeze agriculture's footprint, grow more on existing farms, use resources more efficiently, shift diets, reduce waste) are all good technological fixes, none of which are terribly complicated.
52 These preferences may shift diets towards less iron bioavailable food sources, with less consumption of green leafy vegetables and fruits, offering some explanation of why the anaemia trend has been more marked in the socially advantaged.
However, by shifting Diet Pepsi to DDB New York, he added, "we are taking full advantage of the resources that Omnicom has to offer".
In fact, many studies used trophic shifts, diet switching across trophic levels, as indicators of food-web responses to perturbations, such as the invasion of exotic species, and spatial or temporal subsidies to a system [5] [6].
Stimulating appetite, lowering energy expenditure, shifting diet preference towards food rich in fat and increasing the rewarding value of food are all potential mechanisms by which ghrelin leads to increased body weight and increased adiposity.
Clare Oxborrow, a campaigner at Friends of the Earth, said: "Meat consumption can no longer be ignored in the climate debate – shifting diets to less meat and more plant proteins will be crucial.
So yes, doubling supply is one option to the impending food shortage, but another option would be a global focus on shifting diets away from the vast inefficiencies of animal consumption to the healthier and more sustainable consumption of crops.
