During the winter months, hospitals often see an increase in heart-related emergencies. Justin Fox, MD, Chair of the Department of Cardiology at RWJUH Hamilton and member of Hamilton Cardiology Associates, explained that cold weather can put extra strain on the heart. “Winter weather brings more than cold temperatures. It brings an increased risk to heart health. Each year, we see a noticeable rise in emergency room visits during the winter months, particularly following severe weather events when activities like shoveling snow place sudden strain on the heart,” said Dr. Fox.
Dr. Fox outlined several reasons why colder temperatures affect cardiovascular health. He noted that low temperatures cause blood vessels and arteries to constrict, including those supplying blood to the heart. This narrowing restricts blood flow and reduces oxygen delivery to the heart muscle. Additionally, extreme exertion from activities such as shoveling snow can lead to a rapid increase in blood pressure and heart rate.
He added that this combination—narrowed coronary arteries due to cold and higher blood pressure—can result in rupture of cholesterol plaque within the arteries, which is a common cause of heart attacks.
To help reduce risks during winter, Dr. Fox advised regular physical check-ups and discussing with healthcare providers about personal risk factors before engaging in strenuous outdoor activities like snow shoveling or pulling a sled. “As a cardiologist, I want to share important facts about why heart attacks are more common in winter and what steps you can take now to protect your heart and stay safe all season long.”
He recommended that individuals who are not regularly active or have known cardiovascular disease should avoid sudden intense effort such as shoveling snow. For those who do shovel snow, he suggested pushing rather than lifting it, moving small amounts at a time, taking frequent breaks, dressing warmly while outdoors, and being attentive to any unusual symptoms.
Dr. Fox also emphasized that signs of a heart attack may not always include chest pain—especially for women—and urged people to stop activity immediately if they experience chest pain, pressure, dizziness, palpitations or severe shortness of breath while shoveling.
“Together, let’s protect your heart this winter,” said Dr. Fox.
He reminded everyone: “REMEMBER! Call 9-1-1 immediately if you suspect you or someone you are with is having a heart attack or medical emergency. Do not drive yourself or someone else to the hospital. Call 9-1-1”
