Yes, humans benefit from flavonoids, such as those found in dark chocolate, walnuts, strawberries, cinnamon, and blueberries. It is thought that the flavonoids all may lower cholesterol levels; in addition, some flavonoids even have health-benefitting antioxidant properties. And it’s not only humans: The flavonoids in fruit attract animals that eat the fruit and thereby disperse the plant’s seeds, while still other flavonoids influence flower coloration that attracts insect pollinators.