Quercetin is a flavonoid antioxidant found in plant foods, including green leafy vegetables, tomatoes, berries and broccoli. Technically speaking, it is a "plant pigment", which is why it is found in colorful and nutritious fruits and vegetables.
Quercetin is considered to be one of the most abundant antioxidants in the human diet and plays an important part in fighting free radical damage, the effects of aging and inflammation, according to many studies.
Although you can get a lot of vitamins from a healthy diet, some people also take the compound as a concentrated supplement to have a stronger anti-inflammatory effect.
What is the role of quercetin? According to the Department of Pathology and Diagnostics at the University of Verona, Italy, quercetin glycosides and other flavonoids (such as kaempferol and myricetin) are "antiviral, antimicrobial, anti-inflammatory and antiallergic drugs".
They have the potential to be positively expressed in different cell types in animals and humans.
Flavonoid polyphenols are the most beneficial for down-regulating or inhibiting inflammatory pathways and functions. Quercetin is considered to be the most diffused and known natural source of flavonols, and it has a strong effect on immunity and inflammation caused by white blood cells and other intracellular signals.
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