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Lower Blood PressureLower Blood Pressure with Flavonoids

Flavonoids, a type of antioxidant, can be very beneficial to heart health. Some flavonoids prevent atherosclerosis and promote the relaxation of arterial muscles, which allows arteries to dilate (widen) and blood flow to be easier. Other flavonoids reduce LDL oxidation and prevent platelets from sticking together. One study evaluated the affect of a plant rich in flavonoids on 120 men and women diagnosed with high blood pressure and high cholesterol. The study found significantly decreased systolic and diastolic blood pressure over a 6 month period linked to the plant flavonoids. Study participants also had reduced total cholesterol, LDL cholesterol, triglycerides, and increase HDL cholesterol. More studies are needed, but a there is a definite link between flavonoids and reduced blood pressure.

There are over 4,000 identified flavonoids, such as quercetin, xanthohumol, isoxanthohumol, and genistein, and their function varies.

Here are some flavonoids sources:

Citrus Fruits

Flavonoids found in citrus fruits affect capillary permeability and blood flow. The flavonoids also contribute to anti-allergy and anti-inflammatory benefits. Some of the flavonoids found in citrus fruit have been used to treat easy bruising, hemorrhoids, and varicose veins.

Tea

Flavonoids found in green tea are thought to reduce cancer and heart disease. White tea, the least processed tea, has the highest level of flavonoids. Health benefits linked to tea flavonoids include decreased LDL oxidation, decreased cholesterol, and decreased triglyceride levels.

Wine

Both red and white wine contain flavonoids, but red wine has higher levels since fermentation occurs in the presence of grape skins (the source of significant amounts of flavonoids). Many studies have linked moderate red wine intake with protection against heart disease.

Dark Chocolate

Flavonoids found in dark chocolate improve blood flow. Dark chocolate contains almost twice the level of antioxidants found in red wine and almost three times as much as green tea. However, many of the flavonoids that exist naturally in cacao is often removed during production of dark chocolate due to their bitter flavor.

One of the best ways to increase your intake of heart healthy flavonoids is to increase the amount of fruits and vegetables you eat everyday, as well as eating a wide variety of fruits and vegetables to include all the different flavonoids in your daily diet.

Here is a link to more information on Heart Health Tips for Flavonoids.

All the best,
Lisa Nelson, RD

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