This thesis investigates the changes in food consumption patterns by observing the variations in 11 commodity groups. The analysis is based on the Household Income Expenditure Survey (HIES) using data of 7 cross-sections for the period 2001-2014. The study examines the alterations in consumption and calorie bundles for the period under study to determine the change in preferences of Pakistani households. Quadratic Almost Ideal System (QUAIDS) model has been used to estimate price and expenditures elasticities. Results support the hypothesis that food consumption patterns are not only different across regions but are also different among provinces. Despite the increase in unavailability of food items and increased per capita income, calories consumed per adult equivalent in the country is still less than 2340Kcal. It is important to draw the attention of policy makers towards the issue as 22 percent of the population are still malnourished and this can lead to increased disease burdens and lower productivity in the long run