Key points from article :
PHE compared level of deprivation with number of takeaways.
Deprived areas have 5x more fast food outlets than affluent areas.
Tasty and cheap food is hard to resist.
Children exposed to fast food on school route more likely to eat unhealthily.
Public Health England wants authorities to limit new takeaways.
COMMENT: equality in longevity begins with people's diet
The study was published in the BMJ journal.
