The majority of polyphenol phytonutrients be bound to fiber, helping to explain the marked difference in health impacts between whole fruit and fruit to Dr. Gregers nutrition at and get a excerpt from his latest NYT Bestseller HOW NOT TO DIE. (All proceeds Dr. Greger receives from the of his books, DVDs, and speaking engagements go to support the 501c3 nonprofit that runs NutritionFacts.org.)
For those that like drinking their fruits and vegetables, this suggests smoothies are preferable. I can imagine people who eat really healthy thinking they get so much fiber from their regular diet that they need not concern themselves with the loss from juicing, but they be losing more than they think.
Why are polyphenol phytonutrients important? See, for example, my video How to Slow Brain Aging by Two Years that fiber isnt important in its own right. Check out: