"Eat more fruit(s) and vegetables" Is there a BE and AE difference?

Solution 1:

I'm British, and if I ate 3 grapes instead of one apple I'd be eating more fruits but less fruit.

On supermarket packaging a bag of apples sold by number is likely to say 6 fruit without an s (or x6), but this is about the only place you do occasionally see fruits. Using fruits to mean types of fruit is essentially unknown here. What's more common in this sort of advice is to use a word like variety or different in a second sentence.