Berries such as blueberries, strawberries and raspberries are high in antioxidants. Additionally, antioxidants are found in foods such as grapes, nuts and dark green vegetables such as spinach and kale. Orange vegetables such as sweet potatoes are also high in antioxidants.
Red berries such as raspberries and strawberries contain the antioxidant phytochemical ellagic acid, which helps to protect against dietary and environmental agents that cause cancer. Dark colored grapes also support immunity as they are high in antioxidant phytochemicals including proanthocyanidin and anthocyanin and contain vitamin C and selenium. Blueberries are also high in antioxidant minerals and vitamins known to improve immune system function and protect against heart disease and cancer.
Resveratrol and plant sterols are antioxidants commonly found in most nuts and help to lower cholesterol levels. Brazil nuts provide the antioxidant vitamin selenium, which is an important component of certain enzymes that perform antioxidant functions.
Green and leafy vegetables such as kale, leeks and lettuce contain the antioxidant phytochemical kaempferol. This antioxidant may help to protect against cancer. Additionally, lutein and quercetin are potent antioxidants found in green vegetables.
Yellow and orange vegetables such as carrots and sweet potatoes and fruits such as butternut and acorn squash are rich in antioxidants such as vitamins A and C. Pumpkin, papaya, guava and cantaloupe are also rich in antioxidants.
Tea contains anthocyanin and proanthocyanin phytochemicals that fight inflammation and block cell damage. Other high-ranking foods with antioxidants are beans, cranberries, artichoke and prunes. Others include red apples, black plums and pecans.