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Heart attacks are far more dangerous in the mornings than at any other time of the day, research shows. 研究表明，早上心脏病发作比一天当中其他任何时候的更危险。 Patients struck down between 6am and midday suffer a fifth more damage to their heart muscle compared with those who have an attack later on. 患者在早上6点到正午这段时间心脏病发作对心肌的损害比晚些时候的更严重1/5。 Scientists believe the phenomenon may be due to the changes in the body’s blood pressure, hormone levels and metabolism rates that naturally occur when a person wakes up. 科学家认为该现象是由于早上起床后自然地引起体内血压，激素水平和新陈代谢率改变。 It is already well established that heart attacks are more likely to happen in the morning than other times of the day, but the latest study is the first to show that they are also more severe at this time of day. 事实已经证明心脏病发作时间更有可能出现在早上，而不是其他时候，但是此次最新研究首次表明在这个时候发作更严重。 Scientists at the National Centre of Cardiovascular Research in Madrid, Spain, studied 811 patients who were admitted to hospital with heart attacks between 2003 and 2009. 西班牙马德里的国家心血管研究中心科学家研究了811个2003年到2009年因心脏病发作送到医院的患者。 | 
