While it is common to see scientific studies on how health can be improved by using certain, particular supplements of vitamins and minerals it is not the same for the real McCoy.
How true? Ask yourself and do a goggle search (or a PUB Med or any advanced search of scientific articles) about how many times you see a study–any study–on a particular fruit or vegetable that comes out proving some health improvement. Not a group, but a particular fruit or vegetable. And proof of health, not disease (this is an important distinction).
We are talking about real science here not just made up stuff from some science nut or health nut. And we are talking about real fruits and vegetables like a particular apple or broccoli as opposed to a group of fruits or vegetables. In other words we are talking about something very concrete and not at all abstract–this is where real scientific study comes in very handy: such study is not abstract or it is not science. And, importantly, if I can prove it and you cannot, it is not scientifically provable. Period.
How many? Which vegetable? Which fruit?
There are plenty of promoters of eating fresh fruits...