Cardiovascular disease is our leading cause of death by disease; quercetin is one of your best defenses against it.
Quercetin is a type of antioxidant polyphenol called a flavonoid found in fruits and vegetables. Research confirms its ability to prevent heart disease and promote overall health.
Large population studies have found that diets high in quercetin are associated with reduced risk of developing heart disease. Further research has found that quercetin helps prevent heart disease in these eight ways.
- Laboratory and animal research indicate that quercetin triggers removal of cholesterol from artery walls leading to plaque regression.
- LDL cholesterol doesn’t form dangerous plaque unless it becomes oxidized. It has recently become possible to get a blood test showing your level of oxidized LDL through standard laboratories. We encourage everyone to ask for this test as it is more significant than LDL or total cholesterol in determining your risk for a heart attack or stroke. A number of studies have documented quercetin’s ability to inhibit LDL oxidation at doses as small as 150 milligrams a day.
- Quercetin works with vitamin C to build and maintain strong blood vessel walls, improving circulation.
- Quercetin inhibits obesity and diabetes, two risk factors for heart disease.
- Herpes simplex virus infection is a risk factor for atherosclerosis. In laboratory studies, quercetin has stopped herpes simplex virus from replicating.
- High blood pressure is a major risk factor for developing heart disease. Under the latest guidelines, almost half of US adults (108 million, or 45%) have hypertension. A 2016 meta-analysis of seven randomized clinical trials published in the Journal of the American Medical Association found that quercetin significantly lowers blood pressure at doses over 500 milligrams (mg) per day.
In addition to its benefits to heart health, quercetin has immune-stimulating properties. It acts as a powerful antihistamine, reducing allergic reactions. Quercetin is also good for treating chronic pulmonary obstructive disease and asthma. It has been shown to dramatically boost the respiratory antioxidant defense system. And that’s not to mention its powerful anti-cancer properties. Quercetin even helps to prolong life by activating anti-aging genes.
In addition to eating a diet rich in fresh fruits and vegetables, it’s wise to supplement with quercetin. Many practitioners advise 500-1,000 mg per day. However most quercetin supplements have low bioavailability and are a waste of money. At Beyond Health we use only quercetin dihydrate, the safest and most bioavailable form, making it highly effective and the best value for your supplement dollar.
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- Lee SM. Quercetin up-regulates expressions of peroxisome proliferator-activated receptors gamma, liver X receptor alpha, & ATP binding cassette transporter A1 genes & increases cholesterol efflux in human macrophage cell line. Nutrition Research. February 2013;33(2):136-143.
- Bhaskar S. Quercetin alleviates hypercholesterolemic diet induced inflammation during progression and regression of atherosclerosis in rabbits. Nutrition January2013;29(1):219-229.
- Thilakarathna SH. Apple peel bioactive rich extracts effectively inhibit in vitro human LDL cholesterol oxidation. Food Chemistry, May 2013;138(1):463-470.
- Egert S. Quercetin lowers systolic blood pressure & plasma oxidised low-density lipoprotein concentrations in overweight subjects with a high-cardiovascular disease risk phenotype: a double-blinded placebo-controlled cross-over study. The British Journal of Nutrition, 2009;102(7):1065-1074.
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- Wu YP. Herpes simplex virus type 1 and type 2 infection increases atherosclerosis risk: evidence based on a meta-analysis. Biomed Research International. April 2016. Published online.
- Kim CH. Antiviral activities of quercetin and isoquercitrin against human herpes viruses. Molecules. May 2020;25(10):2379.
- Centers for Disease Control and Prevention (CDC). Hypertension Cascade: Hypertension Prevalence, Treatment and Control Estimates Among US Adults Aged 18 Years and Older Applying the Criteria From the American College of Cardiology and American Heart Association’s 2017 Hypertension Guideline—NHANES 2013–2016external icon. Atlanta, GA: US Department of Health and Human Services; 2019.