This document provides a review of literature related to food security and insecurity. It discusses several studies that have examined issues like chronic and transient food insecurity, the evolution of the concept of food security, the buffer stock policy, impact of population growth and income on food demand, food demand projections, causes of food insecurity at national and household levels, and the relationship between liberalization, trade, agriculture, and food security. The review covers topics such as food availability and accessibility in the context of economic reforms, and the role of the Public Distribution System in providing food security.