Statistics show that the high season for strokes among the elderly is December to February. That's because when the blood vessels contract in the cold weather, the heart needs to exert more effort to pump blood, and the blood pressure naturally rises. During the cold season, there is greater force exerted on the walls of blood vessels, blood pressure increases, and blood vessels are more likely to tear.
根據統計，每年 12 ~ 2 月是老年人中風的好發季節，因為當氣溫下降血管收縮，心臟須費更多力才能把血液送出去，血壓自然升高，這時，管壁承受的衝擊力更大，血流壓力增大，血管更容易破裂。