A recent wave of heavy snowfall has sent more than 30 people to the hospital in York Region with suspected heart attacks linked to shoveling.
Southlake Health in Newmarket, which serves as the regional hub for emergency cardiac care, reported that between February 12 and 20, they treated 34 patients for heart-related emergencies after clearing snow.
“Whenever there is significant snowfall, our cardiac team prepares for an increase in cases,” said Dr. Christopher Overgaard, chief of cardiac health at Southlake Health.
Dr. Brad Dibble, a cardiologist with PACE Cardiology, warns that shoveling snow can put extreme strain on the heart, especially for those with underlying conditions.
“Sudden cold weather exertion can trigger a heart attack or even sudden cardiac death,” he explained in a Facebook post.
Shoveling heavy snow causes a rapid spike in blood pressure and heart rate, which can lead to:
- Plaque rupture in heart arteries, causing a heart attack
- Angina (chest tightness) due to reduced blood flow to the heart
- Sudden cardiac arrest
While healthy and fit individuals can generally handle shoveling, older adults and those with pre-existing conditions are at higher risk.
According to the Canadian Centre for Occupational Health and Safety, shoveling is especially dangerous for:
People with heart disease, high blood pressure, or high cholesterol
Smokers
Those who lead a sedentary lifestyle
People recovering from a stroke, heart attack, or heart surgery
Talk to Your Doctor First: If you have heart disease, high blood pressure, or other risk factors, get medical clearance before shoveling.
Avoid Early Mornings: Blood pressure is highest in the morning, making heart attacks more likely.
Warm Up First: Take a 20-30 minute walk before shoveling to prepare your body for exertion.
No Coffee, Smoking, or Heavy Meals: Caffeine and tobacco raise blood pressure and heart rate, while digesting large meals diverts blood flow away from the heart.
Use Proper Shoveling Techniques:
- Choose a lightweight shovel
- Push the snow rather than lifting it
- Use leg muscles instead of putting strain on the upper body
With more snowy days ahead, experts urge residents to shovel with caution—or better yet, ask for help if you’re at risk.