teenagers who eat lots of junk food are more likely to suffer from behavioural and emotional problems a new study has foundhowever eating fruit and vegetables appeared to improve adolescent behaviour the study founddr wendy oddy the lead researcher of the australian study published in the journal preventive medicine blamed takeaways for problems such as depression aggression and delinquency reports the daily expressshe said we found higher levels of behavioural and emotional problems were associated with a more westernstyle way of eating namely a diet high in takeaway foods red meat confectionery soft drinks white bread and unrefined cerealsthese problems were less among teens with a healthier style of eating specifically those who ate more fruit and vegetables