The beautiful colors of the plants come from flavonoids, like carotenoids, and there are more than 6,000. Flavonoids are antioxidants that boost your immune system and fight chronic inflammation. Certain scientists think that removing free radicals helps fight depression.
Dark chocolate which has 75% or higher content of cocoa is high in flavonoids and may reduce the risk of depression especially in older women.
Flavonoids food sources are dark beans, berries, black, green and red teas, and red wine but in moderation.