Testo Drive 365 In fact, citrus peels contain a higher concentration of flavonoids than any other part of the fruit (18). Two of the most common citrus flavonoids are hesperidin and naringin - both are powerful antioxidants (19). Retorts and animal research suggests that citrus flavonoids can help fight cancer by reducing inflammation, improving detoxification, and slowing the growth and spread of cancer cells, but human research is needed (20).…See More