迄今为止，大多数有关锻炼和焦虑的相互影响的研究都集中在大脑内的各种神经递质或化学信使，如血清素、多巴胺上。

To date, most research into the interplay of exercise and anxiety has focused on the actions of various neurotransmitters or chemical messengers within the brain, like serotonin and dopamine.

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它制造血清素传递启动区。s/s变异比s/l或l/l变异携带者在他们脑中似乎血清素活动更少。

People with the s/s variant appear to have less serotonin activity in their brains than people with the s/l or l/l variant of the gene.

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有些抑郁症明显因脑中血清素量减少或其活性降低所致；

Some cases of depression are apparently caused by reduced amounts or activity of serotonin in the brain;

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有些抑郁症明显因脑中血清素量减少或其活性降低所致；

Some cases of depression are apparently caused by reduced amounts or activity of serotonin in the brain;

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