Over 4000 different flavonoids have been identified from various plant sources. Common food sources include red wine, stems, flowers, fruits, vegetables, nuts, seeds, herbs, spices, coffee, and teas.
In 1936, some scientists suggested that flavonoids be recognized as vitamins. They believed that flavonoids were necessary to protect the health of capillaries, the smallest blood vessels. But there wasn't enough evidence to justify classifying flavonoids as vitamins.
Flavonoids are divided into groups based on slight differences in chemical structure. Flavones are one of the groups. Methoxylated flavones are a subdivision of that group. Methoxylated flavones are found in especially large amounts in citrus fruits.
Methoxylated flavones are used for poor circulation in the legs (venous insufficiency), varicose veins, heart disease, high cholesterol, cataracts, and cancer.
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