Extreme heat is rising — and so is the risk to your heart
09 Jul 20264 min read0 views
GIST (Key Takeaways)
DETROIT, July 9, 2026 - As summer heat intensifies across the U.S., the American Heart Association is warning that soaring temperatures don't just make people uncomfortable - they can put serious strain on the heart and increase the risk of life-threatening complications. Although tragic deaths from major disasters like hurricanes and tornados may get the most news coverage, extreme heat is actually the leading weather-related cause of death in the United States, according to the National Weather Service.
Heat forces the heart to work harder - when your body is trying to cool down, your heart rate increases and your blood vessels expand. For people with heart disease, and even those who are otherwise healthy , that added strain can become dangerous very quickly.
When temperatures climb, the body sweats to cool itself which can lead to fluid loss and dehydration. At the same time, the heart must pump more blood to regulate body temperature.
Together, these changes can put significant stress on the cardiovascular system.
Clinical Editorial
AHA News (American Heart Association) published a clinical update in Cardiology on 09 Jul 2026.
The item focuses on Extreme heat is rising — and so is the risk to your heart.
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