此项研究的研究人员发现，即使在睡觉的时候，噪声也能提高一个人的应激激素水平。
Noise, its researchers found, raises your levels of stress hormones even while you sleep.
塞曼发现，情绪上感到孤独的老年人即使在睡觉时也会保持较高的应激激素水平。
Seeman found that elderly people who felt emotionally isolated maintained higher levels of stress hormones even when asleep.
保林说，对这些人来说，长期的压力或许比创伤后应激障碍更重要。
For these men, Poulin said, chronic stress is probably a bigger concern than PTSD.
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