Heart Attack Risks Rise During Winter

Research shows that deaths from heart attack, heart failure, and other cardiovascular diseases increase by 26–36% in winter compared to summer months, a pattern that holds true across all regions and climates.

This finding comes from Dr. Bryan Schwartz and Dr. Robert Kloner of Good Samaritan Hospital in Los Angeles, who analyzed data from 1.7 million people over four years. Their study, presented at an American Heart Association conference, examined populations from seven U.S. locations — ranging from warm states like Texas, Arizona, and Georgia to milder climates in California and Washington, and the colder regions of Massachusetts and Pennsylvania.

According to Schwartz and Kloner, several factors make winter a risky season for heart health. Cold temperatures cause blood vessels to narrow, raising blood pressure and forcing the heart to work harder. But the risk isn’t limited to frigid climates. People living in warmer areas experience the same seasonal rise in heart problems.

Winter also brings other health challenges. Flu and viral infections are more common and can strain the heart. Additionally, during the holidays, many people experience higher stress levels, reduced physical activity, and less healthy eating, all of which can negatively affect cardiovascular health.

Keeping Your Heart Healthy in the Cold

Your heart works just as hard in winter as in any other season, so don’t give it a break. Stay consistent with monitoring blood pressure, cholesterol, and weight, maintaining a balanced diet, exercising regularly, and managing stress. Small, steady habits can make a big difference in protecting your heart all year long.

Source:

Schwartz B, Kloner R. Season variation in cardiac death rates is uniform across different climates. Circulation, 126: A11723.