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Heart disease: Eat Your Way To A Healthy Heart With Fish
You don't need to know a single thing about heart health to know that you don't want to see the word 'abnormal' in a sentence about heart rhythm. But a new study confirms that when a certain food is frequently eaten, you may be able to keep the word 'abnormal' out of any discussion about your heart muscle contractions.
On the QT
An electrocardiogram (ECG) measures the rhythmic beating of your heart by giving your doctor several different views of your heart's electrical activity. This highly complex process can be simplified to the 'QT interval': The Q wave starts off the electrical cycle, and the T wave ends it. The QT interval is the brief moment between the Q wave and the T wave.
In a new study from the University of Athens School of Medicine in Athens, Greece, researchers assessed heart health by comparing differences in QT intervals (QT scores) to dietary intake. A high QT score can reveal the risk of arrhythmia - a disturbance of the heart's rhythm. Types of arrhythmias range from simple irregularities, which are not dangerous, to more pronounced abnormalities, which can prompt heart attacks and strokes.
STUDY PROFILE
* Researchers drafted more than 3,000 subjects, evenly divided between men and women, with an average age of 45
* Each subject was given an ECG and completed a food-frequency questionnaire that rated weekly intake of more than 150 different food items
* Data analysis revealed that subjects who ate more than 10.5 ounces of fish each week had significantly lower QT scores compared to subjects who never ate fish Higher QT scores indicate a high resting heart rate, which has been associated with an increased risk of cardiovascular mortality, even when other risk factors are not present.
The Athens researchers believe that a steady diet of fish (which supplies ample omega-3 fatty acids) may help support the electrical function in heart muscle cells.
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