Cold weather increases the risk of heart attacks

When temperatures drop, the risk of heart-related health issues, particularly heart attacks, rises significantly. Research has highlighted the connection between cold weather and cardiovascular events, raising concern for individuals in colder climates or facing sudden temperature changes.

Cold weather poses unique challenges for the body. “When temperatures fall, our bodies respond by constricting blood vessels to conserve heat, which can raise blood pressure,” said Dr. Daniel Krause, cardiologist. “This added strain on the heart can be especially dangerous for individuals with pre-existing heart conditions or those at risk of cardiovascular disease.”

Cold weather impacts the cardiovascular system in several of the following ways:

• Vasoconstriction – The narrowing of blood vessels increases blood pressure, forcing the heart to work harder.

• Increased blood clotting – Cold temperatures can cause blood to thicken, which may elevate the risk of clot formation.

• Elevated heart rate – Activities like shoveling snow or outdoor exercise can strain the heart, especially for those unaccustomed to such exertion.

• Decreased oxygen supply – Cold air can irritate the lungs, reducing oxygen levels and increasing cardiac strain.

Certain groups are more vulnerable to cold-weatherrelated heart issues, including older adults; individuals with existing cardiovascular disease; smokers; those with high blood pressure or diabetes; and people engaging in sudden, strenuous outdoor activities.

Recognizing the signs of a heart attack is crucial. Symptoms to watch for include chest pain or discomfort, shortness of breath, pain radiating to the arm, neck or jaw, and cold sweats or lightheadedness.

“If you or someone you’re with experiences these symptoms, call 911 immediately,” said Krause. “Quick action can save lives.”