The mechanism for these risks appears to lie in the biology of the stress-response system and in the way environment affects a person's genetic activity.

患病风险高于常人的机理似乎来源于压力——反馈系统的生物学原理以及环境对人基因活动的影响。

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In keeping with previous work, they found that high- and low-rank individuals showed different levels of responsiveness to a class of hormones called glucocorticoids, which regulate immune-system activity and response to stress.

ECONOMIST: Social status and health