A 65-year-old man in Lucknow suffered a stroke, attributed by doctors to a sudden increase in blood pressure from cold exposure. Medical facilities in the city are reporting a near doubling of daily heart attack and stroke cases, with experts linking the rise to dropping winter temperatures. Doctors emphasize that cold weather can compromise blood flow, thicken blood, and increase the heart's oxygen demand, urging prompt medical attention for stroke symptoms within the 'golden hour' to prevent severe damage.