The last bullet of the trilogy of immune cells, let's talk about the immune system in the body. In fact, there are many popular science articles about the immune system, and there is often a misunderstanding that immunity is the body's own defense mechanism. Is the stronger the immunity, the better?

Immunity is a word that everyone hears most often. Many nutrition and health products are under the banner of "improving immunity", and many health articles will mention that bad living habits will lead to decreased immunity. We need to clarify one thing here:

Although immunity is an ability, the stronger the better.

Take a negative example-allergies, such as skin allergies and allergic rhinitis, are because the body is exposed to some exogenous allergens and wants to get rid of them, but because of the harm caused by strong immunity.

Immunity: The stronger the better.

Immunity refers to the ability of the body to remove non-self bacteria and viruses and its own abnormal cells. When our bodies are inflamed and viruses and bacteria invade, our immune system will enter an emergency defense state and start killing and attacking both ourselves and the enemy.

If it is only a temporary attack and the scale of the attack is relatively small, our bodies can still tolerate the past, such as fever.

But if it takes a long time and the scale of the attack is huge, it may cause harm to our health, such as rheumatoid arthritis, lupus erythematosus, ankylosing spondylitis and so on. All three diseases are caused by a strong immune system.

Therefore, the stronger the immunity, the better, but in a moderate range, it can meet our needs and eliminate abnormal cells and bacterial viruses in our body.

Side effects of immunity

What are the side effects when immunity works? It can generally include the following aspects:

In (1) immune reaction, some substances produced will do harm to human body. The most typical is the free radicals produced by macrophages when they are used to kill pathogens. After release, they will also cause oxidative damage to normal human cells around pathogens.

(2) Immune response is a state of stress, which will cause various discomforts and consume human energy. For example, if you are suddenly woken up in a deep sleep, you will immediately enter a high-intensity working state. At this time, you will feel sleepy all over and consume a lot of energy.

Therefore, it is easy to feel sleepy, listless and slow-witted when catching a cold, which is the inevitable result when immunity plays its role. At this time, you need to rest more and let your body recover as soon as possible.

(3) Whether in order to produce new immune cells or improve the lethality of immune cells, the body will actively raise its body temperature when it is infected with the virus, consuming the body's material and energy. For ordinary creatures, matter and energy are very precious.

Compared with hard-working bees, under the same limited food supply, the "worker bees" who have been working continuously in the immune system will survive for a shorter time than those who have not been activated by immunity.

(4) When the immunity to a certain virus plays a role, it may reduce the immunity to other bacteria. This is the reason why patients with primary influenza virus are prone to secondary bacterial pneumonia in medicine.

At present, the side effects of immunity cannot be eliminated. Therefore, healthy immunity is not as strong as possible, but can be balanced before considering the strength of the enemy and ourselves to minimize the harm to the body.

To study this complicated and precise work, it is the work of medical researchers to maintain a healthy body and keep immunity in a relatively healthy and balanced state for ordinary people. Of course, at an appropriate time, we should also learn to promote the immune system to maintain immune activity in a scientific way.

For example, when you are young, store young healthy immune cells. When your immunity declines in the future, these healthy young immune cells stored in advance can be reused!

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