What Is It?
And Where Does It Come From?
Quercetin is a plant pigment called a flavonoid. There are different kinds of flavonoids that, like quercetin, can be found in different fruits, flowers, and vegetables. The flavonoids are largely responsible for the colors of many of these plants.
For many years now this compound-found in apples, tea, red wine, and other foods-has been studied for possible health benefits. Quercetin offers a variety of potential therapeutic uses. It can work as an antioxidant by scavenging damaging particles in the body known as free radicals.
What Does It Do?
And What Scientific Studies Give Evidence To Support This?
Quercetin can help inhibit the production and release of histamine and other allergic/inflammatory substances. Histimine is a leading contributor to allergy symptoms such as a runny nose, watery eyes, hives, and swelling of soft tissue including the face and lips.
There have been studies done that suggest flavonoids such as quercetin may help reduce the risk of heart disease. Acting as an antioxidant it can protect against the damage caused by LDL ("bad") cholesterol.
There are many other potential therapeutic uses that quercetin may help prevent or treat. Some of these conditions include high cholesterol, eye disorders, arthritis, fibromyalgia, prostate health, canker sores, and cancer.
Quercetin can be found in many fruits and vegetables. The most primary dietary sources of quercetin are citrus fruits, apples, onions, parsley, and tea. Other fruits and vegetables that are high in flavonoids including quercetin are grapes, dark cherries, and dark berries, such as blueberries, blackberries, and bilberries.
Different strengths of quercetin supplements in powder or capsule form are available. Often times it is put into bromelain (an enzyme found in pineapple) as an anti-inflammatory agent. Not only does bromelain have its own anti-inflammatory and anti-allergy activity, but it also increases the absorption of quercetin.
Who Needs It?
And What Are Some Symptoms Of Deficiency?
If you are currently being treated with chemotherapy, consult your professional healthcare provider before supplementing with quercetin.
So far no adverse effects have been reported from the use of quercetin. However, you should still only take under the supervision of a knowledgeable healthcare provider.
Even though some promising preliminary studies have been done, it is too early to recommend quercetin as a supplement. Like with all dietary supplements you need to consult your healthcare provider before using quercetin.
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