Our second brain is the brain in our gut or the ENS (the enteric nervous system).

我们的第二大脑是我们肠道或肠神经系统中的大脑。

Isn't it called the enteric nervous system?

不是叫肠神经系统吗？

Research suggests that this network, known as the enteric nervous system, contains more than 100m neurons.

研究表明，这个被称为肠神经系统的网络包含超过 100m 个神经元。

When the vagus nerve is severed, the enteric nervous system is capable of organizing and initiating its own reflexes for digestion because it has such a complex collection of neurons.

当迷走神经被切断时，因其有如此复杂的神经元集合，肠道神经系统有能力组织和启动自己的消化反射。

In fact, there is a brain of sorts in your belly called the enteric nervous system which performs everything from sensing nutrients, measuring acids, and coordinating the immune system to defend your gut.

事实上，在你的肚子里有一个肠道神经系统，它可以感知营养、测量酸度、协调免疫系统来保护你的肠道。

In fact, the enteric nervous system, which is an extensive mesh-like network of neurons that controls your entire digestive tract from the esophagus to the anus, doesn't even require the brain at all.

事实上，肠道神经系统是一个由神经元组成的网状网络，控制着从食道到肛门的整个消化道，它甚至不需要大脑控制。

But the enteric nervous system becomes even more interesting when you realize that the microbes in your gut actually produce over 50% of the dopamine found in your body, and 90% of the serotonin.

肠道神经系统有趣的地方在于，你会发现其实体内50%以上的多巴胺和90%的血清素是由肠道内的微生物释放出来的。

But while this extensive network is constantly sending signals from the brain to your body, scientists have noted that 80-90% of the nerve fibers in the enteric nervous system are actually going from the gut to the brain.

但是，当这个大规模的网络不断地从大脑向身体发送信号时，科学家们注意到，肠道神经系统中80-90%的神经纤维实际上是从肠道到大脑的。

In fact, the enteric nervous system, which is an extensive mesh-like network of neurons that controls your entire digestive tract from the esophagus to the anus, doesn’t even require the brain at all.

事实上，肠神经系统是一个广泛的网状神经元网络，控制着从食道到肛门的整个消化道，它甚至根本不需要大脑。