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Dont Worry- Be Good To Your Heart

According to researchers from the United States, anxiety appears to increase the risk of heart attacks and death in patients who have coronary artery disease.

Coronary artery disease is caused by plaque build-up on the inside walls of the arteries that supply oxygen and blood to the heart. This causes them to harden and narrow. This in addition, can lead to heart attack, angina (chest pain) and other serious complications.

According to a report in the Journal of the American College of Cardiology, a number of studies have looked at the toll that mental stress takes on cardiac health, but most have focused on depression, not anxiety. The few studies that have examined the role that anxiety might play in heart disease have usually measured anxiety only once, and not over the course of time.

The study conducted by Dr. Charles M. Blatt, from Harvard Medical School in Boston involved 516 patients with heart disease. The subjects completed a standard anxiety questionnaire annually for an average of 3.4 years. The study group was 82 percent male with an average age of 68 years.

It was found that a total of 44 nonfatal heart attacks and 19 deaths occurred during the study period. Significantly, a high cumulative anxiety score was associated with an elevated risk of both heart attack and death from any cause, whereas the initial anxiety score was not.

It was also seen that subjects with average anxiety scores in the highest 25 percent were nearly twice as likely to die of a heart attack or death from any cause compared with those with scores in the lowest 25 percent.

Further analysis of the data revealed that with high blood pressure, diabetes, and other known cardiovascular risk factors, each unit increase in the overall anxiety score increased the odds of nonfatal heart attack or death by 6 percent.

The authors conclude that initial anxiety scores failed to predict negative patient outcome s, "suggesting that assessing anxiety regularly over the long-term is necessary.

The authors also suggest that randomly assigned clinical studies are now needed to see if treatment to reduce anxiety, can improve the outcome of patients with coronary artery disease.


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