Explore plant‑based food components
Learn about phytonutrients—plant‑derived compounds such as antioxidants, carotenoids, flavonoids, and isoflavones that may support health. Access resources including nutrition information sheets, scientific databases, and research on flavonoids, proanthocyanidins, isoflavones, and other phytochemicals.
General Resources
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Antioxidants and Cancer Prevention
HHS. National Institutes of Health. National Cancer Institute.
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Antioxidants: In Depth
HHS. National Institutes of Health. National Center for Complementary and Integrative Health.
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Antioxidants
HHS. National Institutes of Health. National Library of Medicine. MedlinePlus.
Also in Spanish/Español.
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Nutrition & Health Info Sheets for Health Professionals - Phytochemicals
University of California, Davis. Department of Nutrition.
Specific Phytonutrients
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USDA Special Interest Databases on Flavonoids
USDA. Agricultural Research Service.
See also: USDA Special Interest Databases on Proanthocyanidins and USDA Special Interest Databases on Isoflavones.
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Curcumin (Curcuma, Turmeric) and Cancer (PDQ®)–Health Professional Version
HHS. National Institutes of Health. National Cancer Institute.
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Facts About Flavonoids
UF/IFAS Extension.
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Nutrition & Health Info Sheets for Health Professionals - Catechins and Epicatechins
University of California, Davis. Department of Nutrition.
See also: Nutrition & Health Info Sheets for Health Professionals - Flavonols.
More Phytonutrients
The Micronutrient Information Center at the Linus Pauling Institute at Oregon State University contains detailed research and summaries of various phytochemicals including chlorophyll, lignans, and resveratrol.