We use a global computable-general-equilibrium (CGE) model based on GTAP social accounts to simulate alternative food consumption scenarios from the present through 2050. Scenarios of future population and income are taken from the Shared Socio-economic Pathways, which also provide narrative on aspects of development such as technological change, environmental protection, and changes in diets. A two-stage consumer demand system, with the linear expenditure system as the first stage, is used to keep per-capita calorie consumption in a plausible range. Demand system parameters are adjusted over time to simulate alternative diets.