In reality, the positive impact on your metabolic, bio, age, and cancer markers of not eating anything (fasting) are marked and distinct as opposed to magical formulas of "dark colored vegetables" and "antioxidants" and "polyphenols" whose effects are difficult to ascertain at best and at worst are probably non-existent.[1]
If there were some combination of blueberries and red wine and pomegranates and acai juice that made us live noticeably longer, or more disease free, we would know it. We wouldn't have overlooked it accidentally. We are hardly the first people to think long and hard about the problems of aging. What we do know is that vigorous exercise and calorie restriction make people immediately healthier and less afflicted by disease - cancer and otherwise.
It's quite sad, frankly, how terrible and unacceptable that simple recipe is for so many people. People are, literally, dying to not exercise.
[1] For a good discussion of the inability for "antioxidants" to reach the inner portion of the cell where the "oxidation" occurs and for a discussion as to how bad that might be if it could happen (oxidation and free radicals are probably essential cell signaling methods that cause ill mannered cells to commit apoptosis, or "suicide"), I recommend the excellent book _Power, Sex, Suicide: Mitochondria and the Meaning of Life_ by Nick Lane.