|Food Sources of Quercetin: Quercetin is found in the skins of onions, apples & grapes as well as tea and red wine, and to some extent, leafy green vegetables. Only a small percentage of dietary ingested quercetin will be absorbed in the blood.
Quercetin & Allergy/Immune Health: Quercetin stabilises mast cells and inhibits the production and release of histamine and other allergy inflammatory substances. Histamine is a substance that contributes to allergy symptoms such as a runny nose, watery eyes and swelling of soft tissue including the face and lips, as seen in Hayfever and Hives
Quercetin & Prostate/Mens Health: Quercetin's anti-inflammatory action has been shown to reduce the symptoms in men with non-bacterial or chronic prostatitis (inflammation of the prostate). The condition causes chronic pain and difficulty with urination, and is sometimes called chronic pelvic pain syndrome.
In a double-blind trial, 67% of people taking Quercetin (500mg twice daily) had an improvement of prostatitis symptoms, compared with a 20% response rate in the placebo group.
In addition, preliminary laboratory studies indicate that quercetin may inhibit the growth of prostate cancer cells in test tubes. How this will ultimately translate to prevention or treatment of prostate cancer in men is unknown at this time.
Quercetin & Diabetic Health: Lab research suggests that
Quercetin blocks an enzyme that leads to accumulation of sorbitol, which has been linked to nerve, eye, and kidney damage in those with diabetes.