Ask Sword

"."

Yan Yundang stared at Li Ang, who was calm and calm, and suddenly smiled: "It's interesting. Are you a doctor?"

The housekeeper at the side was startled when he saw Li Ang put on a wolf hair beard on himself, and was afraid that Li Ang would say something strange that would make Yan Yun angry, so he said quickly: "Li Ang Xiaolang is a candidate for the academy this year, and he came second in the first exam. Imperial subjects, arithmetic, Danqing, and herbal medicine are all top-ranking."

"oh?"

Yan's father and son raised their eyebrows at the same time, Yan Yundang looked Li Ang up and down, and said in a deep voice: "It's nothing more than the herbal medicine department, with your body, Yuke can also be ranked first?

Is there no one left in my Yu State Military Mansion? "

"hehe."

Li Ang smiled slightly, "Yuke pays attention to the unity of people and horses, and the Claret Horse and I won the first class together."

"Well"

Yan Lin murmured, riding a horse all the year round will inevitably leave marks on the palms and legs, Li Ang doesn't look like he can beat those barbarian boys who grew up on horseback since childhood,

But the school exams are always fair and open, so he couldn't help but believe it.

"Father, do you want him to try?"

"."

Yan Yun glanced at his son, and wanted to scold him again, but seeing the worried expression on the eldest son's no longer young face, his heart softened, and he sighed: "Forget it, forget it, alas , just try it."

Yan Yun was sitting on the chair with a big horse and a golden sword, with the palm of his left hand spread out on the table, waiting for the pulse diagnosis.

Li Ang was not polite either, he pressed the wolf hair beard above his lower lip, walked forward, first took a pulse, then asked the family members a few words, and did a physical examination of the upper abdomen and other parts.

‘There are many potential causes of jaundice, but there is no fever on the body surface, no upper abdominal pain, and no gastrointestinal bleeding—this excludes the possibility of viral hepatitis, cholangitis, liver cancer, and periampullary cancer.

However, patients with liver cirrhosis can see the face of chronic liver disease, spider veins, liver palms, facial telangiectasia, etc. - if there is no such thing, it proves not,

In addition, it is not cholestatic jaundice - there is no xanthoma on the eyelids and other parts, and according to the family members, the urine color of the patient has not turned into a strong brown color'

Li Ang quickly screened the cause, and suddenly asked: "Duke, how many hours have you slept in a day during this time?"

The corners of Yan Yundang's eyes twitched, the corners of his mouth pulled down,

Yan Lin took a deep breath, "During this time, my father has to sleep for six hours a day, sometimes seven hours."

"Drowsiness?"

Li Ang frowned slightly and said, "Do you feel that the gait of the lower limbs is unstable, it is difficult to walk, and the hands and feet are often symmetrically numb?"

Before Yan Yundang could speak, Yan Lin stepped forward and said: "Yes."

"I see."

Li Ang thought for a moment, then slowly said: "Duke, this is anemia."

To be precise, it is megaloblastic anemia.

Megaloblastic anemia is a kind of anemia caused by deoxyribonucleic acid synthesis disorder, which can be roughly divided into two types,

One is pernicious anemia caused by vitamin B12 deficiency,

One is megaloblastic anemia caused by lack of folic acid (vitamin b9).

The clinical manifestations of these two types of anemia are quite similar, all of which are fatigue, shortness of breath, dizziness, palpitations, pale complexion or mild jaundice, often accompanied by neurological symptoms such as abdominal distension, diarrhea, glossitis, and weakness of hands and feet.

"Anemia"

A complex expression appeared on Yan Lin's face, and he said in a deep voice, "During this time, my father has been taking Siwu Decoction and other blood-nourishing medicines, and he hasn't seen any improvement."

Li Ang shook his head helplessly, and said, "Anemia is both a symptom and a symptom.

The root cause lies in the stomach. "

"stomach?"

As soon as this remark came out, not only Yan Lin was shocked, but Yan Yundang and Qiu Jing also frowned.

"That's right."

Li Ang nodded, and changed the topic: "When I came from the backyard just now, I saw four cages of pigeons in the yard?"

Pigeon?

Yan Lin and the others were even more puzzled, unable to keep up with Li Ang's train of thought.

What does the pigeon have to do with the stomach?

Do you want to drink pigeon stew?

Yanlin nodded and said: "Well, those pigeons are raised by my son for fun according to the thesis on flying pigeons in the school publications."

"I also liked keeping pigeons when I was a child."

Li Ang said: "But because the family doesn't have much money, the scale of breeding is not as good as that of the Duke's Mansion, only ten of them are raised.

Among the ten pigeons, five were full-fledged and docile,

The five have a bad temper and often peck at people. "

Yan Lin and the others frowned, not knowing why Li Ang said this section.

Is it just to illustrate five?

Li Ang continued on his own: "I like those five docile ones, so I feed them polished rice every day after the bran and aleurone layers have been removed.

Hate those grumpy five and feed them cheap brown rice.

But after a long time, the five docile pigeons who ate rice every day became depressed.

Pigeons that ate brown rice were as healthy as ever. "

"Control Variable?"

Qiu Jing's eyes lit up on the side. Ever since he heard Li Ang's novel statement in the restaurant that day, he felt that many things suddenly became clear.

In the two control groups, only one condition was different, and the rest of the initial test conditions were all the same.

If the final results of the control group are different, then the initial different condition is the determinant of the difference.

"Yes, at that time I wanted to figure out why the two groups of pigeons showed different results."

Li Ang said: "I separated the five docile pigeons, three of them were still fed with polished rice, and the other two were fed with brown rice.

Of the five grumpy pigeons, three were still fed brown rice, and the other two were fed milled rice.

As time went by, I found that no matter whether it was grumpy or mild-tempered, as long as the pigeons were only fed with polished rice, they all showed signs of malaise and malaise.

And all the sick pigeons will recover from the disease simply by restarting the brown rice diet.

From this, I determined that there is a certain substance in the brown rice, and when the substance is lacking for a long time, the pigeons will get sick. "

This is the experiment conducted by the Polish biochemist Kasimir Funke in 1911. He gave the name of the specific substance he defined - vitamin

Or rather, vitamins.