- HEMOHIM
- HEALTH
Let's take a look at how immunity works, a powerful remedy for our bodies.
Immunity Is The Best Doctor
Hippocrates, the father of medicine, spoke these timeless words, and they hold true even today. Our bodies are constantly under attack from microorganisms, and internal threats like cancer cells are always looking for an opportunity. When our immune system weakens, we become susceptible to illness. Despite the advancements in modern medicine, there's no better way to stay healthy than by regularly strengthening our immune system to prevent illness in the first place.
In 2009, when swine flu first spread in Mexico, something surprising happened shortly after U.S. President Obama made a state visit to the country and toured the National Museum. The day after Obama’s visit, the museum director who personally guided him passed away from swine flu. What’s even more surprising is that President Obama remained unaffected. This is an example of the power of immunity.
In humans, the occurrence of disease is closely related to immunity. Immunity is the body's ability to resist pathogens. When infected with the flu virus, some people recover in a day or two, while others suffer from symptoms like a runny nose and cough for a month without much improvement. The difference lies in each individual's immunity.
We often think colds are caused by cold weather, but in reality, it's our body's immune system, which may struggle to adapt to seasonal changes, that plays a crucial role. Dr. Abo Toru, a Japanese immunologist, emphasized the importance of immunity, stating, “If immunity does not fulfill its role, it is easy to catch colds, cancer, and other diseases.” In other words, when immunity decreases, the chances of catching colds, pneumonia, bronchitis, cholecystitis, and cystitis increase. Additionally, decreased immunity significantly raises the risk of cancer.
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NK CellsThese cells are responsible for innate immunity, attacking virus-infected cells and cancer cells.
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B CellsThese cells manage humoral immunity by producing antibodies against specific antigens.
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T CellsThese cells are involved in cellular immunity and help regulate immune function.
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MacrophagesThese cells induce an immune response by secreting toxins and providing information to lymphocytes about invading antigens.
Source: ATGen Co., Ltd. Website
Immunity refers to the body’s defense system that prevents pathogens from entering or neutralizes those that do.
When germs invade the human body, the first line of defense is the skin and mucous membranes. However, some intruders manage to get through, and that’s when white blood cells take action.
White blood cells are broadly divided into two types: granulocytes and lymphocytes. Like a military organization, each has a distinct role. Granulocytes primarily remove large bacteria, while lymphocytes target microscopic viruses and cancer cells. Granulocytes act as the watchmen of the immune system. They patrol the blood vessels and eat up bacteria or foreign matter they encounter. If they encounter an invader they can’t handle, they call for help from lymphocytes and other immune cells, releasing substances called cytokines to alert them.
When the alert is sounded, lymphocytes, which are usually inactive, spring into action. Lymphocytes include T cells, B cells, and NK cells. T cells remember strategies used to combat previous invaders and instruct B cells accordingly. B cells then produce antibodies to target specific invaders as per the T cells' strategy. These antibodies neutralize bacteria and viruses, rendering them harmless. NK cells (Natural Killer cells) directly attack virus-infected cells and cancer cells. While B cells and T cells need prior information and memory to attack, NK cells can identify and attack enemies independently.
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