Although there were no blood biochemistry and x-rays, based on these symptoms in Heidelberg Jr., combined with other factors, John was very certain that it was rickets.

Even in the 21st century, rickets are not that rare.

In fact, this disease is a nutritional deficiency disease, because of the lack of vitamin D, which leads to calcium and phosphorus metabolism disorders, thus causing bone lesions as the main characteristic of systemic diseases. It is more common in children under two years of age, but late-onset rickets in teenagers is also common. It's just that in the future, because of the progress of the economic level and the popularization of people's health knowledge, it is relatively rare.

Of course, that's just relatively.

But in the 19th century, it was a different story entirely.

Not to mention those poor and weak countries, even the European and American powers have a very high incidence of rickets, and a record in a literature in John's mind is as high as 40%-60%. However, rickets does not necessarily directly manifest itself in the physical manifestations, some people are more seriously ill and will have obvious changes in physical signs, while most people have milder illness, which only affects the final development. Therefore, in addition to the influence of nutrition, exercise and other factors, diseases such as rickets are gradually recognized and prevented.

In fact, malnutrition is one of the most common phenomena in all countries of this era.

Even with the victory of the first industrial revolution and the beginning of the second industrial revolution, the economies of several major European and American powers have indeed developed rapidly, but ordinary people are only at the level of food and clothing, and workers still have to face high-intensity labor for more than ten hours a day, and the nutritional situation is naturally not much better. As for some common trace elements and vitamin deficiencies, the medical community in this era has not even produced this concept......

"Goo-dong!"

After a pause. Mr. Heidelberg swallowed hard and asked, "Mr. Huntelaar, is this ...... Basking in the sun for two hours a day, eating cod liver oil, vegetables, etc., can cure this child's disease? This...... How is that possible? ”

"Why can't it be?"

Smiling slightly, John asked rhetorically.

Don't wait for the other party to refute. John waved his hand and smiled: "Mr. Heidelberg, let me ask you a question first, have you ever been to Europe?" ”

"No, no, I haven't left the United States."

Stunned by John's question, Mr. Heidelberg quickly shook his head. As ordinary small businessmen, the Heidelberg family's business was mainly concentrated in the New York area, and they had not even left the city, let alone Europe on the other side of the Atlantic.

After a slight pause. John continued to ask the confused Mr. Heidelberg: "I suppose you have never left the United States, you must have heard of one thing, that is, on ocean-going ships, sailors drink lemon juice, right?" ”

"Huh? Of course I know that. ”

The brow furrowed, and Mr. Heidelberg nodded.

Lemon juice must be drunk across the Atlantic, which is common knowledge to many people in this era, and has been circulating in the world for hundreds of years. Everyone doesn't know why, but everyone knows one thing. If you travel long distances at sea, you can easily get scurvy if you don't drink lemon juice. People certainly don't know that lemon juice can give seafarers vitamin C supplements. But the bones of hundreds of thousands of people over the centuries have made them remember this firmly.

But what does this have to do with little Heidelberg?

Under the puzzled gaze of the Heidelbergs, John said calmly: "At present, there is no consensus in the medical community on why lemon juice can prevent scurvy, but after a long period of research. A corollary was drawn: that is, our human body needs a special substance to prevent the occurrence of scurvy, and these substances can only be obtained through food, but at sea because food is relatively simple, so it is ......"

Simple vitamin deficiencies were unknown in the 19th century.

So while listening to John's explanation. Far from alleviating the Heidelbergs' doubts, the Heidelbergs' doubts intensified.

Doctors of this era can rely on experience to prevent and treat certain diseases.

For example, lemon juice at sea, they knew that it would prevent scurvy from the people on board. Another example is rickets, which was known decades ago to be alleviated or even cured by eating cod liver oil. However, in contrast, the physicians of the 21st century relied on real scientific theories, while the physicians of the 19th century relied on the experience passed down from generation to generation.

But......

Even these simple experiences are not possessed by any physician, let alone the symptoms are not typical of late-onset rickets, so after reading Johan's "prescription", the Heidelbergs were dumbfounded: the doctor they had visited before would not have told them these things!

"Uh......"

Seeing that the Heidelbergs' faces were becoming more and more dazed, John suddenly felt a sense of frustration in his heart, and sighed secretly: "I won't tell you more details, to put it simply, I think that little Heidelberg lacks something in his body, which leads to the occurrence of these symptoms...... Well, in fact, his susceptibility to colds and colds is probably related to these conditions. The lack of this thing in little Heidelberg's body had to be obtained from some food, and it was also related to the exposure to the sun, so I gave him such a prescription......"

As he pondered the language, John patiently explained.

The treatment of rickets is actually very simple, if it is in the 21st century, it can also provide some medicine or calcium supplements, but in this era, it is sunshine and food! The food is a little troublesome, but it's not a problem for the Heidelberg family, and the sun is free and everyone can enjoy it at will!

Compared to a few dollars a bottle of sulfonamides, this is a truly inexpensive prescription!

Unfortunately, no matter how sure John was in his heart, after listening to his words, the Heidelbergs' expressions quickly became strange. Even the top physicians in Europe could not have heard of such a thing as vitamins, let alone ordinary businessmen like the Heidelbergs. For them, John's words are like a fantasy: you don't need to take medicine when you're sick, you just need to bask in the sun and eat something.

Are you kidding!

After pondering for a moment, the Heidelbergs gradually came to their senses.

The more they pondered, the more suspicious they became, and the Heidelbergs looked at Johann with a slightly unkind gaze, and they were now beginning to think that the Herr Huntelaar was fooling himself in order to avoid prescribing sulfonamides.

Only the young Mr. Heidelberg, after being surprised, looked at the doctor in front of him and became curious. It is certainly not a pleasant experience for a small child to take those bizarre drugs, and proposals like John's are undoubtedly the most popular among them. What's more, there is more sun exposure and more exercise in the prescription!

To put it simply, isn't that just going out to play?

"Hoo ......"

Exhaling heavily, Mr. Heidelberg tried his best to control the anger in his heart, and said in a deep voice with an unkind face: "Mr. Huntelaar, is there any basis for what you are saying? Which medical book or paper did you come from? Sorry, I didn't mean to question you, but I've never heard of this treatment! ”

"It's the result of my own research."

As if he didn't see the other party's ugly face, John still smiled calmly: "Mr. Heidelberg, I know that this treatment may be a little difficult for you to accept, but it is indeed effective. If you're a professional physician and you've heard my name, you probably wouldn't question that. ”

John was already a little impatient with the current situation at the hospital.

In order to attract more patients to the hospital, or more simply, to make his patients stop questioning his diagnosis, John doesn't mind showing them his standing in the medical profession.

"Your name?"

Mr. Heidelberg tilted his head and looked at John with some bewilderment. In his opinion, the doctor in front of him is too young, if the purpose of coming to the hospital this time was not to buy medicine, I am afraid that he would have been clamoring for another doctor to treat the child, but at this time, listening to the meaning of the other party's words, can he be more famous than Mr. Roosevelt?

"Yes, sir."

Squinting his eyes slightly, John smiled faintly: "In fact, this Heinz General Hospital is my personal property, and the sulfonamide drug you desperately want to get is also the ...... I invented when I was in Europe" (to be continued......