“Quercetin was found to be second only to resveratrol as a potent sirtuin-gene-activator … Optimal absorption and benefits appear to occur when Resveratrol is included with other polyphenols like Quercetin.” – Dr. Joe Maroon, The Longevity Factor
It is one of the seventeen (21) compounds discovered by Harvard Medical School scientists, and reported in 2006, to increase sirtuin “survival genes” that increase longevity and help decrease age-related diseases.
In the polyphenol family, Quercetin is considered a flavonol, and is one of the most active antioxidants found in medicinal plants. In addition to red wine grapes and wine, foods rich in Quercetin are apples, both black and green tea, onions (particularly the outermost rings), citrus fruits, cherries, and various types of berries.
Many medicinal plants are thought to owe their biological activity to high Quercetin content. Quercetin has known anti-inflammatory effects and it also helps to prevent cancer, prostatitis, heart disease, cataracts, allergies, bronchitis, and asthma. It also enhances the absorption and prolongs the effects of Resveratrol.
Quercetin extracts in supplements generally comes from the flower buds of the Japanese Pagoda Tree (Sophora Japonica) also known as the scholar tree. It is an extraordinarly hardy tree, and can withstand heat, cold, and drought.
There are many pure-Quercetin supplement found on the market today. More prevalent, are supplements with include Quercetin and other polyphenols such as those found in red wine grapes. Quercetin also interacts with Resveratrol to increase its bioavailability – the amount of time it remains in the blood stream for interaction with cells.
Quercetin has been analyzed in many scientific studies and found to have a large number of medicinal benefits. Some of these studies include:
Quercetin found to protect against DNA damage. In this study at the University of Maastricht, Quercetin supplementation in humans was found to prevent DNA damage, a possible explanation of the reported anti-cancer benefits of Quercetin.
Quercetin found to aid chronic prostatitis. In this 1999 study at UCLA, reported in the Journal of Urology, Quercetin was found to significantly improve symptoms of chronic prostatitis.
Quercetin may prevent multiple forms of cancer. Kyoto University, 2008. Conclusions of a study in the antioxidant and free-radical scavenging properties of Quercetin.
Quercetin prevents illness in stressed subjects. In 2007 researchers at Appalachian State University proved in a double blind DARPA funded study that Quercetin is able to reduce illness and maintain mental performance in physically stressed test subjects.
Quercetin increses flu resistance. A study on stressed mice at the University of South Carolina and Clemson University found that supplementation with Quercetin canceled the the reduction in flu resistance of stressed mice.
US Military using Quercetin to protect troops from illness. The military is experimenting with chocolate banana bars laced with Quercetin to protect troops from illness and boost energy.
This articles has also been published by Mark Juliano at www.ezinearticles.com