A new crown pneumonia epidemic that has swept the world has made "immunity" a hot word, and how to improve immunity has attracted much attention. What exactly is immunity? How to judge low immunity? How to improve immunity?
What is immunity?
After hundreds of thousands of years of evolution, human beings have the ability to resist foreign viruses and bacteria, and this ability is immunity. The immune system is like the "army" in the human body, and there are "wars" in the body every day, but most of the time you don't know it, this is because the "human army" is in an absolute advantage. When you have an increase in body temperature, a sore body, a lot of snot and tears, and pain, it means that the "army" in the body has begun to "fight" and open the "self-protection" of the body. This hidden "army" in the human body is the immune system, which includes immune organs such as bone marrow, thymus, spleen, lymph nodes, and tonsils. For example, when the fever body temperature rises, the immune system reactivity is enhanced, the number of immune cells increases, and the bactericidal activity is enhanced.
Human immunity mainly includes three parts: natural immunity, which is also the basis of human immune function, related to genetics, age and other factors, generally with age changes; specific immunity, refers to the immunity produced after contact with a specific antigen (such as vaccines); variable immunity, mainly refers to the immunity that can be improved through acquired adjustments. Since the body's resistance to disease is the sum of these three immunities, the actual effect of acquired improvement on immunity is relatively limited, and if necessary, it should be scientifically vaccinated [1].
The main consequence of the decline in immunity is that the human body is more susceptible to viruses, bacteria, etc., and the following symptoms indicate that immunity has been weakened [2].
1. Easy to catch a cold
The most direct manifestation is that it is particularly prone to colds, illness and medication have become commonplace, and the time to heal each illness is very long. Because normal people have strong immunity, they can effectively prevent the invasion of cold viruses. However, when immunity is low, the body's barrier ability is weakened, and it is impossible to resist the damage caused by foreign viruses to the body, and there may be a cold. Therefore, if you always have a cold, you need to actively improve your immune function.
2. Anorexia
When immunity is low, appetite also declines. Normal people have a good appetite, and various nutrients can be ingested at this time to meet the nutritional needs of the body. Therefore, the function of human organs can be improved, thereby effectively improving resistance. After the immunity declines, various problems will follow, and even the loss of appetite is obvious.
3. Get angry at the little things
Recently anxious, for a little thing to lose their temper, everyone dare not provoke you, you are probably just tired. The tired brain stores more negative memories, and we are more likely to be sullen when we are tired.
4. Mental malaise
If there is a lack of energy in a short period of time, it is mostly related to the decline in immunity. No matter what you do, you always feel very tired, even if you don't need much manual labor, you can't help but feel tired. Often worry about whether there is a physical problem, go to the hospital to check and can not find out what the problem, as long as you rest for a period of time, it seems to be back to normal, and so on. In severe cases, drowsiness may even occur.
5. Easy insomnia
Usually, if there is always a manifestation of insomnia, it is likely to be related to the decline in immunity. Because excessive stress is also one of the factors that lead to the decline of immunity, always too much pressure, long-term anxiety, depression, etc., at this time, people's immunity declines significantly, and it is easy to be affected by mental factors and insomnia.
6. Frequent constipation
When constipation occurs, many people think that it is related to fire. In fact, long-term constipation is also a manifestation of decreased immunity, which shows that the human gastrointestinal tract is not powered enough, the body is weak, and the feces are difficult to excrete. If this is the case, it is also necessary to be vigilant against a decline in immunity.
7. Feel sore and dry eyes
If you feel that your eyes are sore, swollen, dry, and your vision is blurred, others look at you and feel that your eyes are unfocused, and the charm of electric eyes is no longer there, which is the effect of fatigue.
How to improve immunity?
Improving the body's immunity is not a day's work, more and more studies confirm that lifestyle has a non-negligible impact on the immune system, such as eating habits, fitness habits, living habits, etc. will play a role in enhancing or weakening immunity.
There are many ways to improve immunity, but for people with low immunity, the most important thing is to properly supplement the various nutrients that the human body lacks. How to replenish the nutrients that the human body lacks? Then we must pay attention to the nutritional balance of the diet. Many people now have the bad habit of picky eating, because they are picky eaters, so it will cause the body to be unable to absorb the full range of nutrients. If you want a balanced diet, you must consume a certain amount of vitamins and minerals and amino acid substances every day, which play a decisive role in improving immunity [1].
For people with low immunity, staying up late is a very lethal behavior. Adequate sleep time can promote the activity of human cells. A study published in the journal Sleep showed that when exposed to the virus, those who slept less than 6 hours a week were 4 times more likely to catch a cold than those who slept more than 7 hours, and those who slept less than 5 hours were at higher risk. It can be seen that maintaining healthy sleep habits can not only promote human metabolism, but also help the human body improve immunity, thereby forming a protective shield and resisting the invasion of various viruses and bacteria.
Exercise is also an effective way to improve immunity. Exercising for 20-30 minutes a day can allow the body to recover or boost immunity faster than overexertion or no exercise at all. Moderate exercise can promote the consumption of human calories and fat, promote human metabolism, reduce inflammation in the body, and to a certain extent, is conducive to the exertion of immune function. Relatively speaking, strenuous exercise consumes a lot of body energy and produces a large amount of metabolic waste, which interferes with the function of the immune system, which is why athletes should pay more attention to avoid pathogen infection.
There are many ways to improve immunity, and the most important thing is to find the one that suits you. At the same time, we should form a scientific understanding of immunity, which does not allow us to be "invincible", and do not expect immunity to resist the invasion of all diseases. Nicole Avina, a visiting professor of health psychology at Princeton University, has said that there is no simple way to amplify the immune effects immediately. Therefore, the most effective way to prevent diseases is to form a correct understanding of the disease and prevent it scientifically and in a timely manner.
bibliography:
Zeng Mengning. Exploring human immunity[J].Chinese Financiers,2021(08):122-123.
Wang Yao. Weakened immunity? The body will appear these 7 signals[J].Human Health, 2021(15):53.