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A new international study led by researchers at Queen’s University Belfast finds that people who eat foods rich in flavonoids are less likely to develop chronic diseases and tend to live longer.
Flavonoids, a group of plant compounds, are abundant in blueberries, strawberries, oranges, apples, and grapes — and they also occur in tea, red wine, and dark chocolate. These foods have antioxidant properties, and The Independent reports they may help extend lifespan. The researchers also say a diet high in flavonoids can help prevent type 2 diabetes, cancer, and cardiovascular and neurological diseases.
Co-author Aedin Cassidy noted, “From laboratory data and clinical studies, we also know that different flavonoids have different effects: some improve blood pressure, while others help control cholesterol levels and reduce inflammation.”
Co-author Benjamin Parmenter added that consuming 500 mg of flavonoids daily is associated with a “16% reduction in the risk of mortality from all causes, as well as a 10% reduction in the risk of cardiovascular diseases, type 2 diabetes, and respiratory illnesses.” He said roughly two cups of tea provide about that amount of flavonoids.
What Else Did the Scientists Discover?
Over a decade, researchers tracked the health of more than 120,000 people ages 40 to 70. It was the first study to highlight the benefits of consuming a variety of flavonoids instead of just eating large amounts of a single source.
The results showed that eating a wider variety of flavonoid-rich foods protects against disease more effectively than relying on one “flavonoid-rich” product. The researchers also confirmed earlier findings that eating colorful foods improves health.
Co-author Tilman Kuhn said, “Eating fruits and vegetables of various colors, particularly those rich in flavonoids, means you are more likely to obtain the vitamins and nutrients necessary for maintaining a healthier lifestyle.”
The study’s findings were published in the journal Nature Food.
