Zhang Hua is an ordinary middle school teacher who shuttles between work and life every day.
Despite the stressful work pressure, he rarely called in sick.
But his colleagues often take turns absent because of colds or flu, but Zhang Hua always keeps himself healthy, and working overtime and staying up late for many days in a row doesn't seem to affect him.
At school, his energy and optimistic attitude can also be contagious to those around him.
He was always able to mingle with the students and participate in their activities between classes, and he rarely seemed tired or impatient.
How did Zhang Hua maintain such a strong immunity, and did he have the "characteristics of a person with strong immunity" that doctors say?
1. The role of the immune system
The immune system is made up of countless cells, organs, and molecules that work together to protect us from foreign aggressors.
When harmful substances such as bacteria and viruses from the outside world try to invade our body, the immune system will be activated quickly.
Mobilize various immune cells, such as white blood cells, T cells, B cells, etc., to start a fierce battle.
These immune cells work together under the command of the immune system. As soon as the white blood cells find traces of harmful substances, they will quickly assemble and launch a siege.
T cells and B cells, on the other hand, can produce targeted antibodies to eliminate pathogens one by one by precisely identifying specific markers on pathogens.
Not only that, but the immune system also has a memory function.
When the body has encountered a pathogen in the past, the immune system remembers the characteristics of the pathogen and responds quickly when it encounters it again in the future, effectively preventing the disease from occurring.
This memory function allows our body to respond quickly to some common pathogens and reduce the occurrence of diseases.
However, the immune system is not omnipotent, and it may take time for the immune system to adapt and respond to some new and unknown pathogens.
During this process, we may feel unwell and even develop into illness.
But it's this ability of the immune system to learn and adapt that keeps us healthy in the face of challenges.
2. People with strong immunity generally have 8 characteristics
Immunity resists all kinds of threats from the outside world, so how do we know if our immunity is strong enough?
Here are 8 signs that tell your body to have stronger immunity.
1. The speed of disease recovery
In our lives, we always meet people who are physically healthy and resilient.
Their wounds are able to heal in a short time, and they can recover quickly even with symptoms such as fever and cold.
In the event of an infection or injury, their bodies are able to quickly mobilize immune cells to the front line.
These immune cells are able to quickly recognize pathogens and launch a violent attack.
At the same time, it can also effectively repair damaged tissues, so that the wound can heal in a short time and restore its original function.
2. Healthy complexion
People with strong immunity tend to have a healthy complexion, and this is not accidental, but a natural manifestation of harmony inside and outside the body.
A healthy complexion is usually a sign of good blood circulation and an adequate supply of oxygen.
When immunity is strong, the circulatory system is better protected, and the blood vessel walls are healthier and less susceptible to inflammation.
This means that the blood is able to flow smoothly, delivering enough oxygen and nutrients to the skin cells to keep the skin rosy and glowing.
In addition, a strong immune system can also promote the normal functioning of metabolism.
Metabolism is the process by which the body's cells are renewed, repaired, and regenerated, and are essential for maintaining healthy skin.
When the immune system is strong, the rate of metabolism is accelerated, and skin cells are able to renew faster, which reduces the occurrence of skin problems such as acne, pigmentation, etc.
3. Abundant energy
Strong immunity means that the body's defense system is efficient at recognizing and eliminating foreign pathogens, such as bacteria and viruses.
This highly effective defense mechanism not only reduces the chance of getting sick, but also allows the body's systems to maintain a relatively stable internal environment.
Thus avoiding energy expenditure and mental stress due to illness.
Secondly, people with strong immunity tend to have a more balanced and healthy diet.
They tend to consume a variety of foods to ensure that the body gets a variety of essential nutrients.
This diet not only helps maintain a good immune system, but also provides the body with a stable source of energy, allowing them to maintain a high level of activity in their daily lives.
4. Stable weight
When the body is attacked by disease, it is often accompanied by problems such as loss of appetite and poor absorption of nutrients, which can lead to weight loss.
People with strong immunity, on the other hand, are able to maintain normal appetite and nutrient absorption due to their better ability to fight diseases, thus avoiding excessive weight fluctuations.
In the face of stress and challenges, be able to maintain a positive mindset and reduce eating loss and weight fluctuations caused by psychological stress.
A good mental state helps to maintain the body's endocrine balance and further promotes weight stability.
5. Strong resistance
A strong immune system also forms an effective protective network within our body.
This network is able to monitor our physical condition in real time, and once an abnormal situation is detected, it will immediately activate the emergency response mechanism, and quickly mobilize various resources in the body to fight the pathogen.
This efficient protection network allows us to quickly recover from the onslaught of viruses and bacteria and avoid the onset of diseases.
People with strong immunity tend to be able to quickly mobilize the body's defenses to effectively fight off disease.
6. Low frequency of infection
If you find yourself with few colds or rare infections, it could mean that your immune system is constantly working effectively to prevent pathogens from invading and multiplying.
When external viruses, bacteria, and other pathogens try to break through our defenses, a healthy immune system can quickly mobilize its power to keep them out.
When a pathogen breaks through the mucosal barrier and enters the body, these immune cells respond quickly to launch a targeted attack by recognizing the pathogen's signature.
They release a range of powerful chemicals that directly destroy pathogens or activate other immune cells to defend against enemy invasions.
7. Good sleep quality
Quality sleep is essential for boosting immunity. When the body enters a state of deep sleep, the body's repair and recovery work begins.
In this process, the immune system is strengthened and is able to fight off diseases and infections more effectively.
Deep sleep promotes cell regeneration and enhances cell repair, while also helping to remove metabolic waste from the brain, thereby improving cognitive function and memory.
A person with strong immunity usually has better sleep quality. They are able to quickly fall into deep sleep and maintain a steady sleep cycle throughout the night.
Such sleep patterns help maintain hormonal balance, especially those associated with stress and mood regulation, such as cortisol and melatonin.
The balance of these hormones is essential for the proper functioning of the immune system.
8. Good eating habits
As the ancients said, "Those who eat and drink are the lifeblood of people." "The quality of eating habits is directly related to our physical health.
People with strong immunity also know how to control the amount of meals they eat and avoid overeating.
They understand that eating too much not only leads to diseases such as obesity and high blood pressure, but also weakens immunity and makes the body vulnerable to external pathogens.
People with strong immunity will also pay attention to the hygiene and safety of their diet, always be very cautious when choosing ingredients, choose fresh, non-polluting ingredients, and avoid ingesting expired and spoiled food.
3. How to self-test
Once we know the signs of immunity, it's natural to wonder how to assess our immunity levels.
Traditionally, immunity testing may require a blood sample to test the number and function of specific immune cells, but this requires specialized equipment and can be uncomfortable.
Fortunately, there are some simple ways to make an initial assessment of immunity without the need for needle.
An easy way to assess is to monitor the body's response.
For example, by observing how quickly wounds heal, a healthy immune system should be able to ensure that small cuts or abrasions begin to heal within a few days.
If the wound does not heal or infections occur frequently, this can be a sign of insufficient immunity.
Also the response to a daily small cold is also an indicator, and if your cold always takes a long time to recover, it could mean that your immune system needs to be boosted.
In addition to this, the level of inflammation in the body is also an important indicator, and while inflammation is a natural response of the body to fight infection, chronic inflammation may indicate something is wrong with the immune system.
We can make a preliminary assessment of the level of inflammation by observing if the body regularly experiences unexplained redness, pain, or other inflammatory responses.
However, these self-tests do not provide a comprehensive assessment of immunity.
They are more like a way to test our daily health and allow us to get an initial understanding of our immune status without visiting the hospital.
Of course, these self-assessment methods are not a substitute for professional medical advice.
In case of persistent health problems or unexplained symptoms, it is essential to consult a doctor and have a professional evaluation.
Maintaining immunity is a long-term process that requires our continuous attention and efforts.
With a balanced diet, regular exercise, adequate sleep, and a positive mindset, we can best support our immune system.
Let's become the masters of our own health and live a more exciting and healthy life.
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