I have come across this phrase:
Functional foods - products which have health-promoting properties over and beyond their nutritional value - have become a significant food industry sector.
[ https://www.sciencedirect.com/book/9781845695927/functional-foods#book-description ]
What does that expression imply?
"over and beyond" is an example of what has been described as "heavenly twins" in English usage. (I thought the source was Fowler, but I have just checked and it is not). Other examples are "just and reasonable", "true and fair", "plain and simple".
Unlike @MaulikV I do not see these habitual and redundant pairings as indicating intensity, just lazy writing.
It is just like 'above and beyond'. Indeed redundant, but such expressions are used to emphasize a higher degree or intensity. In this case, it is said that the health-promoting properties are many more than their nutritional values. In short, such food with little features can get great benefits!
