Although quercetin is not one of the network antioxidants, it does interact with the network by regenerating vitamin C after it neutralizes a free radical, and help restore its antioxidant properties. From reducing inflammation to alleviating allergies to protecting the heart and brain, quercetin seems designed to selectively target disease and dysfunction – without dangerous side effects.
By taking quercetin and vitamin C you may discover many beneficial effects.
Quercetin is a powerful antioxidant, capable of scavenging harmful free radicals – such as reactive oxygen species – that can cause oxidative stress and trigger a wide variety of degenerative disease. Quercetin is a powerful anti-inflammatory agent, as inflammation has been shown to be at the root of many diseases, including cancer, this makes quercetin a powerful tool in nature’s disease-fighting arsenal.
Quercetin has a time-honored place in herbal medicine, especially when it comes to allergy relief. Research has shown that quercetin inhibits the release of histamine from mast cells, thereby reducing allergy symptoms such as watery eyes, itching and hives.
Quercetin not only reduces histamine levels, but also decreases
the number of leukocytes in the lungs and bloodstream, relaxes smooth muscles in airway passages and restores elasticity of lung tissue. This group of benefits means it has possible applications for treating COPD and asthma.
Quercetin helps it provide natural protection against heart disease. It protects cells that line the fragile walls of blood vessels, and also protects the extracellular collagen matrix from oxidation. In addition, it lowers levels of LDL cholesterol – while raising beneficial HDL. Quercetin also reduces the risk of heart attack and stroke by decreasing the “stickiness” of blood platelets. Furthermore, it stimulates production of beneficial nitric oxide, which dilates and relaxes blood vessels to enhance circulation.
Quercetin not only helps prevent cancer by protecting cells from oxidative stress, inflammation and damage to DNA, but has been found to suppress the growth and spread of many different types of cancer cell lines, including cancers of the breast, lung, prostate, liver and esophagus. In a 2010 study, researchers found that a quercetin-rich diet could reduce the incidence of lung cancer in smokers by a stunning 65 percent.
Quercetin mounts an all-out offensive on diabetes by improving insulin response, controlling blood sugar, reducing inflammatory markers, increasing the number of islets in the pancreas, and improving pancreatic and liver function. It also inhibits an enzyme, which contributes to diabetes complications such as peripheral neuropathy and cataracts.
Quercetin enhances the activity of other antioxidant enzymes produced in the body. In particular, glutamate cysteine ligase, which is needed for the PRODUCTION OF GLUTATHIONE – the body’s ‘master antioxidant.’ Finally, quercetin can even help maintain the structure of bones. Research has shown that it can help prevent, and even reverse, bone loss and osteoporosis, while improving the micro-architecture of bone tissue.
The richest sources of quercetin are found in plants of the allium family, including onions, scallions, chives, leeks, shallots and garlic. Onions are the richest source, which explains their use in folk medicine as a treatment for allergies and asthma.
Quercetin is also found in many fruits, including citrus fruits, apples, cherries, grapes, tomatoes and berries. Vegetable sources include spinach, celery, potatoes, lettuce, broccoli, parsley, kale, red cabbage and green beans. Other sources include olive oil, tea, red wine, capers, lovage, sorrel and cocoa.
Many herbs also contain quercetin, such as St. John’s wort, gingko biloba, hops, valerian, passionflower, and chamomile.
To enhance the absorption of quercetin, natural health experts recommend taking it along with vitamin C. Before taking quercetin and vitamin C, discuss the matter with your healthcare provider, who can help you to decide what’s best for you, especially if dealing with a serious health issue.
Furthermore, pectin, healthy fats, resveratrol, curcumin found inside turmeric and EGCG, from green tea can also promote quercetin absorption.
Every day, research seems to reveal more of quercetin’s extraordinary range of benefits, confirming this versatile polyphenol’s position as an emerging superstar in the field of natural therapies.
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The Refreshing Point
Quercetin & Vitamin C Taken Together Become More Effective Against Heart Disease, Cancer & Diabetes