Why Heart Attacks Peak in Winter — And How to Stay Safe
Every winter, cardiologists across India see a rise in heart attack cases. Dr. Nikhila Pachani, Consultant Interventional Cardiologist at Backbone Medicity Hospital, Rajkot, is sharing an important reminder about why the cold season is harder on your heart — and what you can do about it.
What Does Cold Weather Do to Your Heart?
When temperatures drop, your body reacts in ways that put extra pressure on your heart:
- Blood vessels narrow. Cold causes the arteries to constrict, which makes the heart work harder to pump blood through them.
- Blood pressure rises. Narrowed vessels mean your heart has to push with greater force, raising your blood pressure significantly.
- Blood becomes thicker. In colder conditions, blood tends to become more viscous (thicker). This raises the risk of a clot forming inside an artery — one of the most common triggers of a heart attack.
Less Physical Activity Makes Things Worse
Winter also means many of us move less. We skip morning walks, stay indoors, and are generally less active. Reduced physical activity weakens heart health over time, adds to weight gain, and raises the overall risk of a cardiac event.
Simple Steps to Protect Your Heart This Winter
You do not need to fear winter — you just need to be mindful. Here are practical steps that can make a real difference:
- Stay warm. Dress in layers when stepping outside, especially in the early morning when temperatures are lowest.
- Keep moving. Light indoor exercise — stretching, yoga, or a short walk — helps maintain circulation and keeps your heart active.
- Monitor your blood pressure. If you have hypertension or a history of heart disease, check your BP more frequently in winter months.
- Stay hydrated. People often drink less water in winter, but staying hydrated helps keep blood from becoming too thick.
- Do not ignore chest discomfort. Any chest pain, tightness, breathlessness, or unusual sweating — especially in cold weather — should be taken seriously and checked immediately.
Who Is at Higher Risk?
People with diabetes, high blood pressure, high cholesterol, obesity, or a previous history of heart disease need to be especially careful during the winter season. Older adults and smokers are also in a higher-risk group.
If you have any concerns about your heart health this winter, consider speaking with a qualified cardiologist. Early evaluation can go a long way in keeping you safe.