title: Adolescents' non-core food intake: a description of what, where and with whom adolescents consume non-core foods.
abstract: Little is known about adolescents' non-core food intake in the UK and the eating context in which they consume non-core foods. The present study aimed to describe types of non-core foods consumed by British adolescents in total and across different eating contexts.
  
  
  
  A descriptive analysis, using cross-sectional data from food diaries. Non-core foods were classified based on cut-off points of fat and sugar from the Australian Guide to Healthy Eating. Eating context was defined as 'where' and 'with whom' adolescents consumed each food. Percentages of non-core energy were calculated for each food group in total and across eating contexts. A combined ranking was then created to account for each food's contribution to non-core energy intake and its popularity of consumption (percentage of consumers).
  
  
  
  The UK National Diet and Nutrition Survey 2008-2011.
  
  
  
  Adolescents across the UK aged 11-18 years (n 666).
  
  
  
  Non-core food comprised 39·5 % of total energy intake and was mostly 'Regular soft drinks', 'Crisps & savoury snacks', 'Chips & potato products', 'Chocolate' and 'Biscuits'. Adolescents ate 57·0 % and 51·3 % of non-core food at 'Eateries' or with 'Friends', compared with 33·2 % and 32·1 % at 'Home' or with 'Parents'. Persistent foods consumed across eating contexts were 'Regular soft drinks' and 'Chips & potato products'.
  
  
  
  Regular soft drinks contribute the most energy and are the most popular non-core food consumed by adolescents regardless of context, and represent a good target for interventions to reduce non-core food consumption.
authors.affiliation: Centre for Exercise,Nutrition and Health Sciences,School for Policy Studies,University of Bristol,8 Priory Road,Bristol BS8 1TZ,UK.
authors.forename: Zoi
authors.initials: Z
authors.lastname: Toumpakari
authors.affiliation: Centre for Exercise,Nutrition and Health Sciences,School for Policy Studies,University of Bristol,8 Priory Road,Bristol BS8 1TZ,UK.
authors.forename: Anne M
authors.initials: AM
authors.lastname: Haase
authors.affiliation: Centre for Exercise,Nutrition and Health Sciences,School for Policy Studies,University of Bristol,8 Priory Road,Bristol BS8 1TZ,UK.
authors.forename: Laura
authors.initials: L
authors.lastname: Johnson
mesh_terms: D000293:Adolescent; D002253:Carbonated Beverages; D002648:Child; D003430:Cross-Sectional Studies; D004032:Diet; D002149:Energy Intake; D005247:Feeding Behavior; D005260:Female; D006801:Humans; D008297:Male; D062410:Snacks; D006113:United Kingdom
keywords: Adolescents; Eating context; Non-core foods; Regular soft drinks