Cold weather and heart attack risk

Cold weather increases the risk of heart attacks, as it causes blood vessels to constrict, blood viscosity to rise, and activates the nervous system. This places additional strain on the heart, leading to high blood pressure and artery clotting. These risks are compounded by seasonal behavioral factors such as sudden exertion, respiratory infections, and changes in lifestyle. Studies show that the risk of a heart attack rises during cold waves and peaks 2 to 6 days after exposure. Higher-risk groups include individuals with artery disease and the elderly. Preventive measures recommended include dressing warmly, avoiding strenuous exercise, staying well-hydrated, and receiving recommended vaccinations.

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