Quercetin originates in food sources and some is made into supplements. Onions have a high concentration of quercetin and as a flavonoid; the quercetin levels are also relatively high in kale, broccoli, apples and tea. Research has shown quercetin, as a flavonoid, delivers anti-oxidant effects. For this reason, quercetin is being studied as one of the many flavonoids which may contribute to overall good health. Because of the research findings it has been promoted as being effective in a wide variety of diseases, including cancer, eczema, pruritus, treating allergies and asthma, arthritis, prostatitis, fibromyalgia, cataracts and macular degeneration.  Quercetin also promotes wound healing.

Quercetin is promoted in a number of different ways, most of which use research studies to support the suggested uses. It has been promoted to help prevent or treat different types of cancer and quercetin has also been promoted to treat the symptoms of a swollen prostrate. It has also been pushed as a way to relieve neurological complications of diabetes. Read the rest of this entry »