让我们谈谈槲皮素。也许你已经听说过关于癌症或Covid-19的讨论。这种天然成分可以帮助您的整体健康。但是多少，究竟是多少？
We talked to Bryan Kuhn, PharmD, a poison education specialist atBanner Poison & Drug Information Center, about what quercetin is, what it can treat and what it不能treat. Like many natural ingredients, quercetin can be helpful but ultimately has its limits.
What is Quercetin?
Quercetin is in a class of metabolites known as “flavonoids,” a natural ingredient that can be found in many different fruits, vegetables and plants. Here’s where you’ll find it:
- Apples
- Berries
- Grapes
- 洋葱
- Shallots
- Capers
- Tomatoes
- Honeys
- Seeds
- Nuts
- Flowers
- Barks
- 树叶
- Wines
- Teas
Basically, if you consume a lot of organic foods that sprout from the earth, you’ll get a lot of quercetin. In countries like Spain, where the cuisine is heavy in fruits and vegetables, people have shown high daily intakes of quercetin. (Mediterranean diet, anyone?) Quercetin is also available in medicinal botanicals like ginkgo biloba, and as a dietary supplement.
How Does Quercetin Work?
As a flavonoid, quercetin is also an antioxidant. And antioxidants like quercetin attack “free radicals,” or unstable atoms in your cells that cause illness and aging.
博士说，疾病通常会引起炎症，抗氧化剂可以降低这种炎症，但抗氧化剂本身不会治疗炎症。布洛芬可以与治疗炎症有效，并且具有更具可预测的结果。
“Antioxidants work in concert with many other elements of your diet, but antioxidants alone may not be as effective,” he explained. Quercetin and other antioxidants are simply part of a healthy diet.
According to theNational Library of Medicine’s quercetin summary, “Extracts of quercetin have been used to treat or prevent diverse conditions including cardiovascular disease, hypercholesterolemia, rheumatic diseases, infections and cancer but have not been shown to be effective in clinical trials for any medical condition.”
目前,没有数据支持that high dosages of quercetin (500-1000mg daily) will protect you any better than a healthy diet would. (And yes, there is such a thing as太多的维生素.)
Be Careful, and Be Realistic
As with any supplement, consult your physician or pharmacist before taking quercetin supplements, Dr. Kuhn advised. These supplements can interact with your other medications or existing conditions, perhaps in ways you don’t expect.
Also note: Quercetin by itself doesn’t prevent coronavirus transmission or its serious side effects. One of COVID-19’s most dangerous side effects is severe inflammatory pneumonia, so excessive inflammation is a big risk factor. Because of this, substances that reduce inflammation can be helpful overall. While quercetin is becoming a subject of more COVID-19 research, there’s no evidence yet to confirm or even suggest that it cures or prevents COVID-19.
Finding Help
If you have additional questions about taking quercetin or any other supplements, don’t hesitate to speak with your health care provider. Tovwin.comac德赢官方首页 在您所在的地区，访问BannerHealth.com。
If you’d like to learn more about how antioxidants impact health, check out these helpful articles written with help from Banner Health experts.
- Is This Berry a Miracle Cold and Flu Treatment?
- How Coffee and Tea Might Be Good for You
- 南瓜和6种其他营养的秋季食物尝试
