Flavonoid Antioxidants


Flavonoid antioxidants are a diverse group of phytochemicals found in many fruits, vegetables, teas, wines, nuts, seeds, and roots. In fact there are over 4,000 compounds classified as flavonoids.



Macular Degeneration Antioxidants

What makes these phytochemicals so important is their antioxidant activity. They have the ability to reduce free radical formation and to scavenge free radicals.

Free radicals are molecules that damage cell membranes and cause defects in our DNA.

They are known to cause many diseases such as cancer and macular degeneration.

Flavonoid antioxidants include:

quercetin,

rutin, and

resveritrol.

Antioxidant Rich Foods

Flavonoids are present in a variety of foods and beverages. However, some sources are better than others.

Usually, the more deeply-hued the plant, the more flavonoids it provides.

Fruit: Dark berries, such as blueberries, blackberries, and dark cherries, strawberries, cranberries

Tea: Green, white or black tea are a rich source of flavonoids, especially flavonols (catechin, epicatechin, epigallocatechin, epicatechin gallate). Tea is a good source of quecertin.

Onions: The major flavonoid in onions is quercetin. Other flavonoids in onion are kaempferol and myricertin.

Honey: Depending on the flower type the bees feed on, honey contains myricertin, and quercetin.

Other dietary flavonoid sources are beans, apples, spinach, cocoa buckwheat, and the rooibos plant.

The amount and type of flavonoids in plants are affected by the growing conditions, the time of harvesting, the variety of the plant and the plant part.

Antioxidant Benefits to the Macula

Flavonoids may help in the prevention of macular degeneration. A study of 3,072 adults with macular changes showed that moderate red wine consumption may offer some protection against the development or progression of macular degeneration.

Red wine is high in these flavonoids:

quercetin,

rutin, and

resveritrol.

They are all known to have antioxidant activity.

Oxidative stress is thought to damage the macula which leads to the development of macular degeneration.

Antioxidant Benefits to your Health

Most of the health benefits of flavonoids are due to their antioxidant activity. Because of their protective properties, it is suggested that flavonoids may delay or prevent the onset of diseases (such as cancer) which are caused by free radical damage.

However they also:

inhibit low density lipoprotein (LDL) oxidation by free radicals

inhibit platelet aggregation (clumping)

exhibit a vasodilatory effect (dilate blood vessels)

And are known to be:

anti-bacterial,

anti-viral,

anti-tumor,

anti-inflammatory,

antiallergenic.

For a healthy diet it is important to include a variety of foods and beverages so that your body is getting the benefits of these over 4,000 different compounds.

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