Tyrosine is needed to synthesize dopamine and norepinephrine, and tryptophan is needed to synthesize the neurotransmitter serotonin.

酪氨酸是合成多巴胺、去甲肾上腺所必须的；色氨酸是合成神经递质血清所必须的。

They possess tryptophan, which helps create brain soothing hormones.

它们拥有色氨酸，帮助脑部释出舒缓荷尔蒙。

It contains tryptophan, a chemical in the brain that is used to produce serotonin.

它含有色氨酸，即在大脑中用来产生血清的化学物质。

In these experiments participants' serotonin levels are lowered by depriving them of tryptophan.

在这些实验中，参与者的血清水平会因剥夺色氨酸而降低。

Dude, that turkey tryptophan is really gettin' to me, man.

伙计，火鸡色氨酸真的让我着迷，伙计。

" Numerous studies over the past decade have illustrated the importance of tryptophan, " says Dinan.

“过去十年的大量研究已经说明了色氨酸的重要性， ” 迪南说。

One particularly important product for the brain is the amino acid tryptophan.

对大脑特别重要的产物是氨基酸色氨酸。

The brain needs a constant supply of tryptophan metabolites, as they are the building blocks for the mood-regulating hormone serotonin.

大脑需要持续供应色氨酸代谢物， 因为它们是情绪调节激血清的组成部分。

A third line of research depends on the fact that serotonin is made from tryptophan, a substance the body cannot synthesise, and so must ingest from food.

第三个研究方向取决于血清是由色氨酸制成的事实，色氨酸是人体无法合成的物质， 因此必须从食物中摄取。

Tryptophan in our diet is broken down – by a group of gut microbes called bifidobacteria – into smaller metabolites that can cross the blood-brain barrier.

我们饮食中的色氨酸被组称为双歧杆菌的肠道微生物分解成更小的代谢物， 可以穿过血脑屏障。

Essential amino acids, or EAAs, are amino acids that our body needs but cannot produce on its own, and there are 9 of them: Histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine.

基本氨基酸，简称 EAA，是我们身体需要但不能自己产生的氨基酸，其中有 9 ：组氨酸，异亮氨酸，亮氨酸，赖氨酸，蛋氨酸，苯丙氨酸，苏氨酸，色氨酸和缬氨酸。

" If you take patients who have recovered from depression and you deplete their brains of tryptophan, their depression will reoccur within a really short period of time, within minutes to hours" .

“如果你让抑郁症康复的病人耗尽他们大脑中的色氨酸，他们的抑郁症会在很短的时间内再次出现， 在几分钟到几小时内” 。