Abstract A procedure is developed to estimate the nutritional implications of alternative commodity priorities in agricultural research and policy. The model estimates the distribution of supply increases among consumer groups, the related adjustments in total food consumption, and implications for calorie and protein nutrition. Findings from an empirical application of the model to the population of Cali, Colombia, suggest that relative increase in total nutrient supply is a poor indicator of relative nutritional impact because both nutritional waste and consumer adjustment in total food consumption are a function of the commodity from which the additional nutrients are obtained.