On the importance of immunity Immunity is the body’s own defense mechanism, which is the body’s ability to identify and destroy foreign invaders (such as viruses, bacteria, etc.); to deal with aging, damaged, dead, and degenerated cells; and to identify and deal with mutated cells and virus-infected cells in the body, which is the body’s ability to identify and eliminate “foreigners”. It is the physiological response of the body to recognize and eliminate “foreigners”. Immunity relies on the immune system in our bodies to function. In short, the immune system is the equivalent of our nation’s “air, land, and sea defense forces,” which are “monitoring our bodies against foreign enemies” at all times. Current scientific research has found that immunity is a factor closely related to aging, and that diminished immune function is one of the most important causes of aging. The body’s immune function begins to diminish around the age of 30, and this change is quiet, slow and continuous. Immunity classification Innate immunity: is a general term for the defense system of an organism that does not depend on acquired immunity (acquired immunity) but is genetically present. It is the natural state in which the individual is physiologically and constitutionally unsuitable for the survival of certain pathogens. The main role of this system in the body is played by phagocytes. Innate immunity and natural immunity are synonymous, and the use of these terms often varies from person to person. Specific immunity: Specific immunity, also known as acquired or adaptive immunity, is an immunity that is directed against only one pathogen. It is acquired immunity to an acquired infection (healed or asymptomatic infection) or artificial vaccination (vaccines, vaccines, toxoids, immunoglobulins, etc.) that gives the body the ability to resist infection. It is usually formed only after stimulation by antigenic substances such as microorganisms (immunoglobulins, immune lymphocytes) and is able to act specifically with that antigen. Low immunity Most of the body’s immunity depends on genetics, but the environment also has a strong influence, such as an unbalanced diet, such as frequent consumption of sweets and canned foods, as well as poor sleep, little exercise, stress, air pollution, and abuse of antibiotics and antibacterial soaps. Diet has the greatest impact, as some food components can assist in stimulating the immune system and enhancing immunity. A lack of these important nutrient components can seriously affect the body’s immune system to function. Here’s a look at the legendary “5 immunity killers”: which groups of people will have the worst immunity? People with low immunity usually have the following performance in their daily life 1, often feel fatigue and weakness: often unable to work, a little bit of work to feel tired, rest for a period of time after the energy can be restored, but not for a few days, fatigue will appear again. 2, cold constantly: cold has become a “routine”, whenever the weather changes, such as slightly colder, cooler, too late to add clothes sneeze, most normal people do not need to take medicine for the common cold, just need proper rest will be naturally good, while people with low immunity do not take medicine after the cold can not, take medicine for a long time to get better. 3, the wound is easily infected: immune deficient people which part of the body accidentally scratched, within a few days the wound will be red, swollen, and even pus, normal people can soon be good, but immune deficient people have to delay a long time to heal. 4, fragile stomach: eat a meal in a restaurant outside, eat a fast food, other people are fine, immune deficient people like a bacteria detector, E. coli slightly over the standard will be diarrhea or even “vomiting and diarrhea” also had to go to the hospital. Is hyper-immunity beneficial? Everything is a unity of opposites, immunity is also a double-edged sword, hyper-immunity, the human body will also appear abnormal, this time may be over-reaction to exogenous substances, which is commonly referred to as “allergies”. At this time, many exogenous substances can become allergens, such as dust, pollen, drugs or food, which act as antigens to stimulate the body to produce abnormal immune responses, resulting in allergic rhinitis, allergic asthma, hives, food allergies, food intolerances, etc. Serious hyperimmune reactions may even lead to functional damage to the body’s own internal cells, tissues and organs, resulting in the body suffering from its own Immune diseases such as rheumatoid arthritis, systemic lupus erythematosus, thyroiditis and other diseases. What foods can boost immunity? The balance of immune system is an important barrier to protect human health, how can people with low immunity improve the body’s resistance in daily life; medicine is better than food, which foods can improve immunity? It is generally believed that the immune system of newborns is not mature enough and has less than perfect function. The immunity of newborns is mainly derived from the globulin in breast milk. Immunization of children What about the immune situation of children, parents have a baby, the most worried about the baby sick problem. Are there any simple ways to boost your baby’s immunity in life? The immunity of the elderly will slowly decline as they get older and their organ functions age. To improve immunity in the elderly, we must first ensure the intake of high-quality protein, including mainly animal food and soy products. Animal food is preferred as an ideal source of protein, such as fish and eggs, while milk has a high protein utilization rate and skimmed milk is available for patients with high cholesterol. Soy products not only supplement high-quality protein, but also do not increase blood lipids. At the same time, the elderly have more free time, usually do more exercise and some housework are ways to improve the immunity of the elderly. In addition, the elderly can enhance their psychological immunity, vaccination, and rest and recuperation.