Winter Temperatures May Increase Blood Pressure and Stroke Risk, Health Experts Warn

Cold weather can affect the cardiovascular system in several ways. When the body is exposed to low temperatures, blood vessels near the skin narrow to conserve heat. This process, known as vasoconstriction, can increase resistance to blood flow and raise blood pressure.

For people who already have hypertension, cardiovascular disease, or a history of stroke, additional strain on the circulatory system may be particularly important. High blood pressure is a major risk factor for both ischaemic stroke, which occurs when blood flow to part of the brain is blocked, and haemorrhagic stroke, which occurs when a blood vessel ruptures.

Cold weather can also influence activity levels, sleep patterns, and daily routines. People may exercise less outdoors, while changes in medication adherence or dietary habits can affect blood pressure management.

Preventive measures include dressing appropriately for the weather, remaining physically active in safe conditions, taking prescribed medicines as directed, and monitoring blood pressure when recommended by a healthcare professional.

Sudden facial drooping, weakness on one side of the body, difficulty speaking, or abrupt loss of balance may indicate a stroke. These symptoms require immediate emergency medical attention.

Cold weather does not mean a stroke is inevitable. Individual risk depends on several factors, including blood pressure, age, medical history, and other cardiovascular conditions.

The report reinforces the importance of maintaining regular cardiovascular care throughout the year, with additional attention to people who are already at elevated risk.