Quercetin Research

Updated: May 7

Quercetin is one of the most common flavonoids and is noted for its antioxidant and anticancer characteristics. It is found in fruits, grains, and vegetables and is produced by apples, berries, Brassica vegetables, cannabis, capers, grapes, onions, shallots, tea, and tomatoes. In addition, it can be found in some types of barks, flowers, leaves, nuts, and seeds.


This 2016 study reported that quercetin and the family of molecules from which it hails (quercetin glycosides) to be "the most abundant of the flavonoid molecules" and that they are "widely distributed in plants."



Recent research has revealed the anticancer, anti-inflammatory, and neuroprotective properties of the flavonoid quercetin.


A 2019 study entitled "The Anticancer Effect of Quercetin: Molecular Implications in Cancer Metabolism" that was published in the International Journal of Molecular Sciences examined the flavonoid quercetin in terms of its reliability as a therapeutic agent in the treatment of cancer.

A 2019 study entitled "The Anticancer Effect of Quercetin: Molecular Implications in Cancer Metabolism" that was published in the International Journal of Molecular Sciences examined the flavonoid quercetin in terms of its reliability as a therapeutic agent in the treatment of cancer.


The study noted that quercetin is "ubiquitously present in fruits and vegetables, being one of the most common flavonols in the western diet." The study found that the anticancer efficacy of quercetin includes its "ability to promote the loss of cell viability, apoptosis, and autophagy."

A 2019 study entitled "Fisetin and Quercetin: Promising Flavonoids with Chemopreventive Potential" that was published in the journal Biomolecules explored the anticancer properties of quercetin and another flavonoid, fisetin.


The study observed that flavonoids are "therapeutically active phytochemicals against many diseases encompassing malignancies, inflammatory disorders (cardiovascular diseases and neurodegenerative disorders), and oxidative stress."

The study observed that flavonoids are "therapeutically active phytochemicals against many diseases encompassing malignancies, inflammatory disorders (cardiovascular diseases and neurodegenerative disorders), and oxidative stress."


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