The fact that stress increases the risk of heart attack or stroke, was known long time ago, but the reason for this was set just now.
According to a new study, stress causes increased activity in a brain area called the amygdala, which is associated with cardiovascular disease, according to CNN.
In the study, researchers from Harvard involved 300 people. The examination showed that those who have high activity in the amygdala are more likely to suffer from cardiovascular disease. This relationship persisted and after the experts took into account such risk factors as smoking, diabetes or high blood pressure.