Fat tax or thin subsidy? How price increases and decreases affect the energy and nutrient content of food and beverage purchases in Great Britain

This study contributes to the evidence on the impact of price changes on the nutritional quality of diets by exploiting a unique data-set on food purchases. Home-scan data from Kantar Worldpanel, for a large and representative sample of more than 26,000 British households, opens the way to the estimation of the potential outcomes of price increases and decreases on energy, and nutrients purchased from a range of healthier and less healthy foods and beverages. These cover the whole food basket and thus the full range of own- and cross-price effects.