Healthy habits from an early age 'reduce risk of cancer'
3 October 2011 Last updated at 11:42 BST
Parents are failing to put enough fruit and veg into their children's packed lunches, health experts have warned.
The School Food Trust, which examined 3,500 packed lunches in England in 2009, says about 40% of lunchboxes do not contain any fruit or vegetables, compared with 10% of school dinners.
The BBC's Graham Satchell spoke to Kate Mendoza of the World Cancer Research Fund about the findings of the study.