What is quercetin?

Feb 21, 2020

Quercetin is a pigment that belongs to a group of plant compounds called flavonoids.

Flavonoids are present in vegetables, fruits, grains, tea, and wine. They have been linked to several health benefits, including reduced risks of heart disease, cancer, and degenerative brain disorders (1Trusted Source, 2Trusted Source).

The beneficial effects of flavonoids like quercetin come from their ability to function as antioxidants inside your body (3Trusted Source).

Antioxidants are compounds that can bind to and neutralize free radicals.

Free radicals are unstable molecules that may cause cellular damage when their levels become too high. Damage caused by free radicals has been linked to numerous chronic conditions, including cancer, heart disease, and diabetes (4Trusted Source).

Quercetin is the most abundant flavonoid in the diet. It’s estimated that the average person consumes 10–100 mg of it daily through various food sources (5Trusted Source).

Foods that commonly contain quercetin include onions, apples, grapes, berries, broccoli, citrus fruits, cherries, tea, and capers (5Trusted Source).

It’s also available as a dietary supplement in powder and capsule form.

People take this supplement for several reasons, including to boost immunity, fight inflammation, combat allergies, aid exercise performance, and maintain general health.



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