5 a day fruit and veg

Up until now, I have not taken the "5 a day fruit and veg" thing very seriously.
I cynically reckoned that the government grabbed a  number out of a hat  - 5 - and told us it was a good idea.
Well research has come out which has made me sit-up.

The Health Survey of England analysed data on 65,000 people.
4,300 died during almost 8 years of follow up.

It found that -
the more fruit and veg the person ate,
the more their risk of death fell.

After adjusting for factors such as age, smoking, and social class-
People who ate 1-3 portions of fruit + veg a day were 14% less likely to die than those who ate less than 1.
People who ate 3-5 cut the risk 29%.
People who ate 5-7 cut the risk by 36%.
People who ate 7 or more cut the risk by 42%.

That is pretty convincing