These are cells that carry out many of your body's immune functions.

这些细胞执行你身体的许多免疫功能。

There's still much that we do not understand about how the immune system functions.

关于免疫系统的功能，我们还有很多不了解的地方。

Sometimes the answers to these questions lies in biological differences between people, like differences in immune system function.

有时候，这些问题的答案在于人与人之间的生物学差异，比如免疫系统功能的差异。

" This altered intestinal microbiota composition could reduce the risk of anxiety and depression and improve immune function in the body."

“这种被改变的肠道微生物群组成可以降低焦虑和抑郁的风险，并提高身体的免疫功能。”

As we get older, the majority of us will see a decline in our immune function.

随着年龄的增长， 我们大多数人的免疫功能都会下降。

" The microbiota enriched in monks was associated with a reduced risk of anxiety, depression and cardiovascular disease and could enhance immune function, " the researchers wrote.

“僧侣体内丰富的微生物群与降低焦虑、抑郁和心血管疾病的风险有关，还可以增强免疫功能。”

Without Vitamin D, your body would not only suffer decreased mineralization of your bones, leading to diseases like osteoporosis but also see a decrease in immune function.

没有维生素D，你的身体不仅会受到骨骼矿化程度下降的影响，导致骨质疏松症等疾病，还会导致免疫功能下降。

This is when the body gathers energy for the next day, makes repairs to flesh, stimulates growth, development and boosts immune function.

这是身体为第二天收集能量、 修复肌肉、刺激生长发育和增强免疫功能的时候。

Cortisol also interacts with the immune system in complex ways— depending on the situation, it can increase or decrease certain immune functions.

皮质醇还以复杂的方式与免疫系统相互作用——根据情况，它可以增加或减少某些免疫功能。

" When people are sleep-deprived, there are higher levels of stress hormones in their bodies, which can decrease immune function, " says Dr. Phyllis Zee of Northwestern University in Chicago.

" 人们缺乏睡眠时，体内的压力荷尔蒙水平较高，导致免疫功能降低，" 芝加哥西北大学菲利斯·徐说道。

Researchers believe the reasons may be both objective as in happiness boosting immune function and subjective as in happy people being less troubled by a scratchy throat or runny nose.

研究人员认为，这可以从客观和主观两方面来解释。从客观上说，快乐的情绪可以增强人体的免疫力；从主观上说，快乐的人对于嗓子疼、流鼻涕等感冒症状没那么敏感。

Also though, an important piece of the genetic puzzle is the Human Leucocyte Antigen system, shortened to HLA, which is this location of genes on chromosome 6 that regulate our immune functions.

不过，遗传之谜的另一方面是人类白细胞抗原系统，简称HLA，定位于6号染色体；HLA调节我们的免疫功能。

Aware of this, researchers have long thought that people deprived of sleep also ought to benefit less from vaccines, as sleeping less is thought to reduce immune function.

意识到这一点， 研究人员长期以来一直认为睡眠不足的人也应该从疫苗中获益较少，因为睡眠不足被认为会降低免疫功能。

When bacteria digest fiber, they produce short chain fatty acids that nourish the gut barrier, improve immune function, and can help prevent inflammation, which reduces the risk of cancer.

当细菌消化纤维时，它们会产生短链脂肪酸， 滋养肠道屏障，提高免疫功能，并有助于预防炎症， 从而降低患癌症的风险。

These so-called " genes of interest" included genes previously shown to have a role in the growth of neurons — as well as some surprises, like genes previously shown to be involved in immune system function.

这些所谓的“基因区”包括已经被证实在神经元生长中发挥作用的基因，以及一些令人惊讶的基因，如已被证实与免疫系统功能有关的基因。