This forum is about wrong numbers in science, politics and the media. It respects good science and good English.
I think we can take most nutritional advice with a pinch of salt, including the advice to have less salt.
The original "5-a-day" advice was nothing more than a marketing ploy dreamt up by the Produce For Better Health Foundation. They came up with the slogan in 1991
Here's the list of their donors - It's like a who's who of the Big Food industry
As this is the NumberWatch forum, here are plenty of numbers to show that fruit and veg don't actually have a great deal to offer in terms of vitamins and minerals
The Perfect 5-A-Day