When Do Heart Attacks Occur

Which Season Has The Most Heart Attacks?

Several studies have demonstrated that there is seasonal variation in heart attacks.

They are most likely to occur in the winter and least likely to occur in the summer.  This is not just true for heart attacks, but also other cardiovascular events. Several explanations have been proposed. Winter is associated with infections and derangements in cholesterol levels. The lower temperatures cause increased stress on the walls of the heart and reduced flow to the arteries that supply the heart. Winter is also associated with psychological stress, depression, and decreased activity.  In fact, researchers have shown people are most likely to die from heart disease over the Christmas and New Years’ period.

What’s The Most Likely Day Of The Week To Have A Heart Attack?

Researchers have shown that people are clearly more likely to have a heart attack on a Monday. In fact, the same goes for sudden cardiac death from life-threatening heart rhythm problems, and death from other heart diseases. These findings are mainly true for the working population and hold true for men and women; however, this may not be true outside of the West. There is some evidence that in the Middle East the peak incidence of heart attacks is on Fridays, and in Japan, it is during the weekend.  This supports an explanation that relates to the working week and related stressors. It’s possible that increased stress hormones triggered by the return to work can make heart plaques unstable and lead to a heart attack. There is no clear proof of that, however.

What’s The Most Likely Time Of Day To Have A Heart Attack?

It is well established that heart attacks are most likely to occur in the mornings and within the first few hours of walking. One study showed that you are three times likely of suffering a heart attack at 9am as compared to 11pm. Proposed reasons for this include increase surges of stress hormones on waking and also the blood being less thin in the morning, both of which have been demonstrated.  Also, the well-documented morning peaks in heart rate, blood pressure, and blood vessel tone may contribute.

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