Will people who don’t usually catch colds have stronger immunity?

Are there these two types of people around you? One type of person rarely catches a cold, as if headaches and fevers are nothing to them; while the other type of person catches a cold easily. If they don’t pay attention to keeping warm, or go to crowded places without taking protective measures, they will develop cold symptoms, and they may even catch a cold every time the seasons change?

So, does it really mean that people who rarely catch colds have stronger immunity?

What is Immunity

The human immune function is mainly divided into two parts: innate immunity and acquired immunity. ★ Innate immunity Innate immunity refers to the body's function of non-selectively rejecting and removing antigenic substances that enter the body. This is the natural protection ability that organisms gradually establish during the process of phylogenetic development. People have innate immune function at birth. The first barrier of innate immunity is the skin and mucous membrane, which can prevent viruses and bacteria from entering the epithelial layer; the second barrier is macrophages, neutrophils, etc., which help the body to exert immune response. These two barriers block the invasion of pathogens when the body is unaware. ★ Acquired immunity Acquired immunity is the third barrier of the human body against viruses and bacteria. Acquired immunity, also known as acquired immunity or adaptive immunity, is the acquired defense ability established by the human body after birth. It is the ability to resist infection acquired by the human body through acquired infection or artificial vaccination (bacterial vaccine, vaccine, toxoid, immunoglobulin, etc.). It is generally formed after being stimulated by antigenic substances such as microorganisms (immunoglobulins, immune lymphocytes), and can react specifically with the antigen.

Colds and immunity

In life, many people attribute frequent colds, deep fatigue, and delicate stomachs to poor immune function. But in fact, no research has shown that colds and immunity have a direct relationship. That is, if you often catch a cold, it means that your immunity may not be particularly good, but if you don't catch a cold for a long time, it doesn't mean that your immunity is very good. Generally speaking, colds and fevers represent that the immune system is fiercely resisting invading pathogens. A certain degree of fever is conducive to increasing the activity of phagocytes in the immune system and promoting antibody production, which is a self-protection mechanism of the body. For example, children are prone to illness. Children under the age of 6 catch a cold 6 to 8 times a year on average. This is normal. As long as the cold is not serious, it is just a simple runny nose and sneezing, and it can even heal itself. After self-healing, immunity will get better and better. However, adults often catch colds and fevers, but they cannot enhance immunity. This is because the immune system of adults has developed more comprehensively, and immunity will only gradually decrease with age. Therefore, it is not possible to judge whether the body's own immunity is good or not by whether it is often cold.

4 points to look at when evaluating immunity

1. Wounds are prone to infection and difficult to heal. It is normal to have wounds on your body. Everyone gets injured accidentally, but people with strong immunity can quickly stop bleeding and reduce inflammation, promote chronic recovery of wounds and skin repair, so as to prevent further deterioration of wounds. This is also thanks to immune cells. If you are a person with low immunity, not only will the wound recover slowly, but it is also easy to have problems such as suppuration and infection during the recovery process, and even further deterioration of the wound. 2. People who often take antibiotics have low immunity because their body has poor ability to resist external pathogens. Therefore, they usually need to use drugs to treat diseases instead of relying on self-healing ability, and they will also take antibiotics to kill bacteria and prevent inflammation. However, although this can solve the urgent problem for a while, long-term use of antibiotics will also disrupt the intestinal flora, or other side effects, which may lead to further decline in immunity. 3. Love to get angry and have a bad temper. People's life pressure has soared. Some people have become more and more calm, while others have become more and more hysterical and get angry at every turn. When people are in a negative and high-pressure mood for a long time, the cortical level in the body increases, the level of immune cells in the blood decreases, and the body's immunity becomes weaker and weaker. Therefore, when people who are in a negative mood for a long time face pathogens, they will naturally be more likely to get sick if they do not have enough and strong immune cells to fight against them. 4. Poor sleep quality Sleep is an important time for the human body to rest and recover. During sleep, the body will release a lot of cytokines to fight inflammatory infections and help wounds heal. If you stay up late for a long time or have poor sleep quality and insufficient cytokines, it will give diseases an opportunity to take advantage.

How to boost immunity

1. Balanced nutrition

The immune system is composed of antibodies, complement and various immune cells, and their growth requires the support of various nutrients. A comprehensive and balanced intake of nutrients is the basis for the normal functioning of the immune system. Protein, fat, dietary fiber, vitamins, minerals and other nutrients are essential.

2. Be positive and optimistic

Anxiety, panic and other emotions can bring us psychological pressure, leading to a decrease in resistance, making us vulnerable to virus attacks. We must learn to deal with the pressure that comes at any time, be as optimistic and positive as possible, make friends, talk more, and participate in more gatherings.

3. Get enough sleep

Studies have shown that when exposed to viruses, people who sleep less than six hours a week are four times more likely to catch a cold than those who sleep more than seven hours.

Sufficient sleep can ensure that you are full of energy and strength when you wake up. Generally, adults sleep 7 to 8 hours a day, and the elderly should not sleep less than 6 hours.

4. Moderate exercise

Relevant studies have shown that if you exercise for 30 to 45 minutes a day, five times a week, for 12 weeks, the number of immune cells will increase and your resistance will also increase accordingly.

The elderly can do some low-intensity exercise, such as taking a walk after a meal, square dancing, etc. The exercise time should not be too long, preferably about an hour.

Young people can increase the intensity of exercise, such as brisk walking, cycling, badminton, swimming, yoga, etc., which are all good choices to increase daily exercise.

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