In any event, in the case of coffee its consumption bears little resemblance to what would ordinarily be regarded as a fruit.
In any event, in the case of coffee its consumption bears little resemblance to what would ordinarily be regarded as a fruit.
Some fruits have some compounds, along thousands of unspecified others, which seem to have a beneficial effect, most often in-vitro.
Regarding polyphenols, there is no hard, concrete evidence that any have actual positive health benefits.
One thing is for sure, the marketing surrounding these "5 a day to be healthy" is extremely strong and widespread.
This is an outdated theory, that is no longer supported by the current state of the research. The health benefits of fruits and vegetables is primarily driven by phytochemical, not fibers.[1]