[The Amazing Power of Blood Pressure] The heart's ejection pressure is usually expressed as 100 to 140 mmHg based on a mercury sphygmomanometer.
Simply put, it means the pressure that pushes up mercury, a liquid metal, by about 10 to 14 centimeters.
Since the specific gravity of mercury is 13.6, converting this to water, it means the pressure that pushes water up 13.6 to 19.0 meters.
For reference, blood has a specific gravity of 1.053, which is almost the same as water.
If a truly cleanly severed carotid artery were to occur, the blood gushing out like a fountain more than 13 meters high would not be something that only happens in the movies.
---From "PART 1: What is the Human Body?"

[About atrial fibrillation] Myocardial infarction, one of the causes of cardiogenic infarction, is caused by atherosclerosis of the coronary artery.
You just need to be careful of risk factors such as high blood pressure, diabetes, hyperlipidemia, obesity, and smoking, or treat them properly on a regular basis.
However, it is difficult to say that atrial fibrillation can be prevented with certainty.
Because it is one of the most common types of arrhythmia that occurs in the elderly.
In other words, as life expectancy increases, the likelihood of atrial fibrillation occurring naturally along with the aging of the myocardium inevitably increases.
For example, it is said that drinking increases the occurrence of atrial fibrillation, so abstaining from drinking may have some effect.
However, this does not mean that we can expect complete prevention of outbreaks.
Above all, early diagnosis is difficult because patients with atrial fibrillation rarely experience any symptoms.
It is not a condition that causes chest pain like angina, and it is not common for it to manifest as fainting.
Most of the time we don't know until it's quite advanced.
Ultimately, you will need to have an electrocardiogram regularly every year.
---From "PART 3 At least I'll make sure you don't collapse from a stroke"

[Please take your medicine!] I want to say this before I go into detail about the risk factors.
Please take some medicine.
People with high blood pressure, diabetes, hyperlipidemia, and atrial fibrillation should take medications to control each condition, along with anticoagulants.
Of course, the principle is to try to improve lifestyle habits without resorting to harsh measures in the early stages of risk factors.
However, if you go beyond that stage and decide that medication is necessary, it is much more beneficial to take the medication properly without feeling any resistance.
This means that you should carefully decide whether to take the medication or not at first, but once you decide, you must take it properly.
People who take their medication regularly do not develop further risk factors.
There are also many people who are controlled with just one drug for their entire lives.
On the other hand, if you do not take your medication properly, your high blood pressure, diabetes, etc. will worsen and eventually, it will get worse so quickly that even if you take 3-4 different medications, it will not be enough to stop it with just one medication.
---From "PART 3 At least I'll make sure you don't collapse from a stroke"

[Constipation is this scary] If genetics and inflammatory bowel disease are considered uncontrollable factors, what are the fundamental causes that make diet and adenomatous polyps risk factors? I think it's constipation.
Carcinogens associated with the development of colon cancer will clearly be exposed through feces.
The feces in the large intestine are made up of bacteria, which account for 50 percent of the dry weight, along with indigestible waste from the food we eat.
If it is a substance that is unnecessary and needs to be excreted from the body, it is beneficial to health to excrete it at the appropriate time rather than storing it for a long time unnecessarily.
However, due to various factors, if the stool remains in the large intestine for a long time, the frequency of unnecessary contact between the large intestine and various substances present in the stool also increases.
---From "PART 4 ​​Cancer is also life, it's not entirely wrong"

[21 times a month!?] According to a survey of 31,925 health professionals conducted by Harvard University in 2016, men who ejaculated more than 21 times a month had a significantly lower incidence of prostate cancer than those who ejaculated 4 to 7 times.
Surprisingly, this same pattern was observed in those aged 20 to 29.
This shows that prostate cancer can be prevented by ejaculating at an appropriate level from a young age.
The relationship between ejaculation and the development of prostate cancer is now a major issue, as a study conducted in Australia confirmed similar results.
Of course, there are studies that refute this and neutral research results, so it is still difficult to accept it as an established theory.
---From "PART 4 ​​Cancer is also life, it's not entirely wrong"

[For the day you absolutely must not get sick] It is well known that colds are usually easily cured by the body's immune response.
However, if you have an important event coming up, there is a high possibility that even a slight change in your condition could lead to catching a cold and ruining the event.
It's inevitable that an event can be ruined by inadequate preparation, but it's wise to anticipate and prevent situations where a cold can cause problems.
But doctors don't know much about colds, contrary to what you might think.
Even I never learned about colds in medical school.
Ordinary people will not understand.
However, colds are not taught in internal medicine, pediatrics, or otolaryngology classes.
We'll discuss the reason later, but anyway, you shouldn't just trust doctors when it comes to colds.
In the next topic, we will take a closer look at what a cold is.
And let's try to create an 'absolute prevention method' to prevent colds, even if it's just for a few days.

---From "PART 5: A Situation Where You Must Not Get Sick for the Time Being! What Should I Do?"