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The 5 A Day logo.
For more general (non-color-based) efforts to encourage fruit and vegetable consumption, see 5 A Day
The promoters of the programme claim that each colour has distinct nutritional benefits.
They do not substantiate this claim in very much detail, for instance mentioning molecules that are found in some members of a colour group but not others (for instance allicins, found in garlic but not in other members of their "white" category such as mushrooms).
Such claims have been disputed by the scientific community in the past, see for instance [766].
There is also not a substantiation of why the chemicals named need be consumed in the proportions that their diet would tend to suggest.
(That fruit and vegetables in general can have health benefits is not in dispute)
Marketers and distibuters of fruit and vegetable products are permitted to use the 5 A Day logo if their products meet certain criteria, in order to both promote healthier living through a natural diet and to increase sales.
As of March 2007 the campaign seems to have been replaced by Fruits & Veggies—More Matters™.
The colour groups
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