Cookies on this website
We use cookies to ensure that we give you the best experience on our website. If you click 'Continue' we'll assume that you are happy to receive all cookies and you won't see this message again. Click 'Find out more' for information on how to change your cookie settings.

OBJECTIVES: To model food group consumption and price of diet associated with achieving UK dietary recommendations while deviating as little as possible from the current UK diet, in order to support the redevelopment of the UK food-based dietary guidelines (now called the Eatwell Guide). DESIGN: Optimisation modelling, minimising an objective function of the difference between population mean modelled and current consumption of 125 food groups, and constraints of nutrient and food-based recommendations. SETTING: The UK. POPULATION: Adults aged 19 years and above from the National Diet and Nutrition Survey 2008-2011. MAIN OUTCOME MEASURES: Proportion of diet consisting of major foods groups and price of the optimised diet. RESULTS: The optimised diet has an increase in consumption of 'potatoes, bread, rice, pasta and other starchy carbohydrates' (+69%) and 'fruit and vegetables' (+54%) and reductions in consumption of 'beans, pulses, fish, eggs, meat and other proteins' (-24%), 'dairy and alternatives' (-21%) and 'foods high in fat and sugar' (-53%). Results within food groups show considerable variety (eg, +90% for beans and pulses, -78% for red meat). The modelled diet would cost £5.99 (£5.93 to £6.05) per adult per day, very similar to the cost of the current diet: £6.02 (£5.96 to £6.08). The optimised diet would result in increased consumption of n-3 fatty acids and most micronutrients (including iron and folate), but decreased consumption of zinc and small decreases in consumption of calcium and riboflavin. CONCLUSIONS: To achieve the UK dietary recommendations would require large changes in the average diet of UK adults, including in food groups where current average consumption is well within the recommended range (eg, processed meat) or where there are no current recommendations (eg, dairy). These large changes in the diet will not lead to significant changes in the price of the diet.

Original publication

DOI

10.1136/bmjopen-2016-013182

Type

Journal article

Journal

BMJ Open

Publication Date

21/12/2016

Volume

6

Keywords

diet, food price, food-based dietary guidelines, non-communicable disease scenario modelling, non-linear programming, optimisation