就像这位吸毒圣诞老人一样，他们花很多小时扮演和自己天生性格和偏好不配的角色中，用改变情绪的物质来钝化痛苦。
Like Smack Santa, they spend many hours playing roles that don't match their innate personalities and preferences, dulling the pain with mood-altering substances.
缺乏光照有可能破坏你的醒睡周期和昼夜节律，还可能改变一种叫血清素的脑化学物质进而影响情绪。
Lack of light may upset your sleep-wake cycle and other circadian rhythms. And it may cause problems with a brain chemical called serotonin that affects mood.
结果显示，在减肥的一开始就禁食或近似禁食会改变大脑化学物质，对情绪和积极性造成不利影响，也会打击人地减肥努力。
The results suggest that beginning a diet with a fast or near-fast may alter brain chemistry in a way that adversely affects mood and motivation, undermining the person's weight-loss efforts.
结果显示，在减肥的一开始就禁食或近似禁食会改变大脑化学物质，对情绪和积极性造成不利影响，也会打击人地减肥努力。
The results suggest that beginning a diet with a fast or near-fast may alter brain chemistry in a way that adversely affects mood and motivation, undermining the person's weight-loss efforts.
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