The main suspect bad compounds put specifically in processed meat are nitrates and nitrites.

加工过的肉类中，主要被怀疑有害的化物是硝和亚硝。

But at the time no one knew why amyl nitrite worked only that it did.

时没有人知道为什么亚硝戊酯会起作用。

Well, Nitrosamines are the cancerous compounds suspected to form from the nitrate and nitrites found in processed meat.

人们怀疑亚硝胺是由加工肉类中的硝和亚硝形成的癌症化物。

On the other hand, nitrites help to prevent bacterial growth that can cause botulism.

另一方面，亚硝有助于防止细菌生长的特性可导致肉毒中毒。

Now, there are some major issues with the nitrate nitrite idea.

现在，硝亚硝的观点有一些主要的问题。

These nitrites react with amino acids during cooking, forming nitrosamines, which are known carcinogens, increasing your risk of developing cancer.

这些亚硝在烹饪过程中与氨基发生反应，形成亚硝胺，亚硝胺是已知的致癌物质，会增加患癌症的风险。

(video) Normally, your urine doesn’t have any nitrite in it, although it’s chock full of nitrate.

（视频）通常情况下，您的尿液中不含任何亚硝，尽管其中充满了硝。

When your body metabolizes this stuff, NDMA breaks down into nitrite (NO2-) and methyl radicals (CH3).

您的身体代谢这种物质时，NDMA 会分解成亚硝 (NO2-) 和甲基自由基 (CH3)。

Part of this cycle takes place in the mouth, so there is naturally plenty of nitrite in our saliva.

这个循环的一部分发生在口腔中，所以我们的唾液中自然有大量的亚硝。

This paper refers to both nitrate and nitrite as nitric oxide therapeutics.

这篇论文将硝和亚硝作为一氧化氮的治疗方法。

But by around 1880, doctors began to realize that nitroglycerine was even more effective and faster acting for heart problems than amyl nitrite.

是到了 1880 年左右，医生们开始意识到，硝甘油比亚硝戊酯对心脏病的疗效更有效、作用更快。

But, the acidic nature of our stomach is suspected to allow nitrates and nitrites to turn into nitrosamines in the body during digestion.

是，人们怀疑我们的胃的性是让硝和亚硝在消化过程中在体内转化为亚硝胺的原因。

Like the pH of your pee, the concentration of various compounds, and its levels of certain cells or molecules, such as nitrite.

就像小便的 pH 值、各种化物的浓度，以及某些细胞或分子（如亚硝）的水平。

The ammonia-laden water is therefore pumped through colonies of bacteria which, given enough oxygen, will convert the ammonia into nitrite and nitrate.

因此，富含氨的水被泵入细菌菌落，如果有足够的氧气， 细菌菌落会将氨转化为亚硝和硝。

A diet high in sodium nitrites may also lead to a decrease in your body's ability to transport oxygen properly in your red blood cells.

高亚硝钠的饮食也可能会降低你身体在红细胞中输送氧气的能力。

During heat processing of the meat, a small portion of the additive sodium nitrite is suspected to turn into the cancerous nitrosamines like the earlier mentioned NDMA.

在肉类的热处理过程中，人们怀疑一小部的分添加剂亚硝钠会转化为致癌的亚硝胺，就像之前提到的 NDMA。

In fact, celery juice which has very high concentrations of nitrate, and is used to make the all natural “no added nitrates or nitrites” processed meat.

事实上，芹菜汁含有很高的硝，用来制作纯天然的" 不添加硝或亚硝" 的肉制品。

At first they used a different chemical called amyl nitrite, a compound that we now know has a nitrite group that dilates blood vessels and lowers blood pressure.

起初，他们使用了一种不同的化学物质，称为亚硝戊酯，我们现在知道这种化物有一个亚硝基团，可以扩张血管并降低血压。

A diet high in sodium nitrites may also lead to a decrease in your body’s ability to transport oxygen properly in your red blood cells.

亚硝钠含量高的饮食也可能导致身体在红细胞中正确输送氧气的能力下降。

Bacon, ham, salami, sausages and hot dogs contain chemicals that are harmful for us, like nitrates and nitrites that can damage the DNA in our digestive system and lead to cancer.

培根，火腿，香肠，香肠和热狗含有对我们有害的化学物质，像硝和亚硝，可以破坏我们消化系统的DNA，并导致癌症。