It's a stress hormone.

它是一个压力性激素。

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But why would adding a stress hormone actually reduce fear?

但，为什么添加了压力激素，却减少了恐惧呢？

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In recent years, found that stress hormone secretion and black light are.

近年来发现，黑色紧张素的分泌和光照有关系。

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In recent years, found that stress hormone secretion and black light are.

近年来发现，黑色紧张素的分泌和光照有关系。

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