This document discusses the relationship between biofuel policies, agricultural prices, and food security. It makes three key points: 1) There is not expected to be a strong direct link between biofuel demand and consumer price indices (CPI), as prices are affected by many factors like weather, policies, and market behaviors. 2) The impact of biofuel policies on both food CPI and energy CPI must be considered, as increases in either can negatively affect the poor. The design of biofuel policies can help determine their effects on consumers and taxpayers. 3) Biofuel policies may increase both the level and volatility of agricultural prices in the long run by shifting supply structures and linking commodity markets more closely to