This works for the time being, but ultimately only 75% of the brain's energy requirements can come from ketones. It still needs glucose!

这暂时会用，但最终酮类只能够满足大脑所需能量的75%，它仍然需要葡萄糖！

So during prolonged fasting or any kind of food deprivation situations, our body produces ketone bodies and these have been proposed to suppress appetite.

在长时间禁食或任何食物匮乏的情况下，我们的身会产生酮，这被认抑制食欲的。

And the sweet smell is this particular ketone that is given out; it's called acetone.

甜香味尤其这种酮所散发出，它的学名丙酮。

When you've burned out enough of your carbohydrate stores, your liver then turns fatty acids from your diet, and from your body fat into ketones.

当你消耗掉足够多的碳水化合物时，你的肝脏就会将饮食中的肪酸和身肪转化酮。

Interestingly, both ketone bodies break down into acetone and escape as a gas by getting breathed out the lungs which gives a sweet fruity smell to a person's breath.

有趣的，两种酮都会分解成丙酮，之后以气形态随着肺部呼吸排出，会使患者的口气有一种水果似的甜味。

Some research suggest that our bodies can adapt to other energy sources like ketone bodies and be less reliant on carbs.

一些研究表明，我们的身可以适应其他能量来源，如酮，减少对碳水化合物的依赖。

Because there is no more glucose and the fats are too large to cross the blood-brain barrier, your brain changes modes and begins to use ketone bodies for energy, which are short-chain derivatives of fatty acids.

因没有更多的葡萄糖，肪又太大而不能通过血脑屏障，你的大脑就会改变模式，开始使用酮能量，酮肪酸的短链衍生物。

We use nitrogen to clean the lacquer, and we use methyl ethyl ketone to keep the stylus clean.

我们用氮气来清洁漆，我们用甲乙酮来保持唱针的清洁。

These ketone bodies are important because they can be used by cells for energy, but they also increase the acidity of the blood, which is why it's called keto-acid-osis.

这些酮很重要，可被细胞用来获取能量，但他们也会增加血液酸性，所以才叫酮症酸中毒。

Oxford University Emeritus Professor of Chemistry Gus Hancock says it is due to the build-up of chemicals called ketones in the patient's blood.

牛津大学名誉教授化学加斯·汉考克表示这由于被称酮的化学物质在病人血液中累积所致。

We can expect that ketone production would have been even higher if they had the caffeine without carbohydrate.

我们可以预期，如果他们只摄入咖啡因而不摄入碳水化合物，酮的产量会更高。

And, they enhance the production of ketones.

提高酮的产生。

After that happens, the liver turns the fatty acids into ketone bodies, like acetoacetic acid and beta hydroxybutyric acid; acetoacetic acid is a ketoacid because it has a ketone group and a carboxylic acid group.

此后，肝把肪酸转化成酮，比如乙酰乙酸、β-羟基丁酸；乙酰乙酸一种酮酸，因它有酮基团和羧酸基团。

So, the more caffeine, the more ketones.

所以，咖啡因摄入越多，产生的酮就越多。

Beta hydroxybutyric acid on the other hand, even though it's still one of the ketone bodies, isn't technically a ketoacid since its ketone group has been reduced to a hydroxyl group.

而β-羟基丁酸虽说也酮，但却不酮酸，因它的酮基团被还原成了羟基。

First, the caffeine in the coffee actually helps to boost ketone production, even if you're not doing a low-carb diet.

首先，咖啡中的咖啡因实际上有助于促进酮的产生，即使你没有进行低碳水化合物饮食。

However, this doesn't matter if getting more MCT oil into the stomach and getting more ketones into the brain doesn't improve cognitive function.

然而，如果增加 MCT 油以及大脑酮摄取量不能提升认知功能的话，这么做就毫无意义了。

By comparing the mother's blood with the newborn's umbilical cord blood, he found that out of 416 cases, 70% of babies were born with even higher levels of ketones than that of the mother.

通过比较母血液和新生儿脐带血，他发现，在所有 416 例新生儿中，70% 婴儿内的酮含量甚至高于母中的水平。

So it's a preferential energy source, moves above ketones, carbs, everything.

因此，它一种优先的能量来源，优于酮、碳水化合物等一切。

Bicarb, ketones, all these sort of things.

小苏打，酮，所有这些之类的东西。