What is the reason why bacteria make people sick?

Bacteria are a common presence in real life, and when bacteria come into contact with the human body, it is easy to cause illness. Generally speaking, there are many reasons why bacteria cause diseases in the human body. This is because the human body's immunity is low, which makes it easy to get sick. If the body's immunity is low, it cannot block bacteria, so it is easy to get sick, and it is also easy to cause diseases in other parts of the body.

What are the causes of bacteria causing illness in humans?

Low immunity is the root cause of human illness. Why do people get sick?

The root cause is the imbalance in the number of immune substances such as immunoglobulins in the body, which leads to decreased immunity and immune dysfunction.

Humans rely on nature for survival. In the process of energy conversion with nature, humans will inevitably allow pathogenic microorganisms in nature, including parasites, bacteria, fungi, viruses, etc., as well as toxins to invade the body and form exogenous pathogens. At the same time, the body's cells are constantly growing and aging. If senescent cells are not cleared in time, they will interfere with the body's physiological functions and form endogenous pathogens.

Under normal circumstances, a precise balance is maintained between exogenous and endogenous pathogens and the human immune system. If the immunity is reduced due to some reasons, such as excessive physical exertion, excessive mental burden, incomplete development of young physiological functions, decline of elderly physiological functions, excessive use of chemical synthetic drugs or Chinese herbal medicines, chemotherapy, radiotherapy, etc., this balance will be disrupted and disease will occur. From this we can see that the invasion and interference of internal and external pathogens are the external causes of human illness; and the root cause of illness is the body's inability to defend, identify and eliminate pathogens. This physiological phenomenon of being unable to defend, identify, and eliminate pathogens is called low immunity, and low immunity is the root cause of human disease.

Why do people get sick?

Low immunity is the root cause of human illness. Why do people get sick? The root cause is the imbalance in the number of immune substances such as immunoglobulins in the body, which leads to decreased immunity and immune dysfunction.

Humans rely on nature for survival. In the process of energy conversion with nature, humans will inevitably allow pathogenic microorganisms in nature, including parasites, bacteria, fungi, viruses, etc., as well as toxins to invade the body and form exogenous pathogens. At the same time, the body's cells are constantly growing and aging. If senescent cells are not cleared in time, they will interfere with the body's physiological functions and form endogenous pathogens.

Under normal circumstances, a precise balance is maintained between exogenous and endogenous pathogens and the human immune system. If the immunity is reduced due to some reasons, such as excessive physical exertion, excessive mental burden, incomplete development of young physiological functions, decline of elderly physiological functions, excessive use of chemical synthetic drugs or Chinese herbal medicines, chemotherapy, radiotherapy, etc., this balance will be disrupted and disease will occur. From this we can see that the invasion and interference of internal and external pathogens are the external causes of human illness; and the root cause of illness is the body's inability to defend, identify and eliminate pathogens. This physiological phenomenon of being unable to defend, identify, and eliminate pathogens is called low immunity, and low immunity is the root cause of human disease.

Nutritional components are closely related to the body's immunity. "The human body's immunity includes specific immunity and nonspecific immunity. The strength of nonspecific immunity is closely related to the body's own condition.

When the body is overly fatigued, has nutritional imbalance, or is under excessive stress, nonspecific immunity will decline to varying degrees.

Pathogenicity of bacteria

The pathogenicity of bacteria refers to the ability of bacteria to cause infection. The pathogenicity of bacteria is to specific hosts. Some are pathogenic only to humans, some are pathogenic only to certain animals, and some are pathogenic to both humans and animals.

Different pathogens can cause different degrees of pathological processes in the host and lead to different diseases. For example, Salmonella typhi infection causes typhoid fever in humans, while Mycobacterium tuberculosis causes tuberculosis. This is determined by the characteristics of the bacterial species.

The degree of pathogenicity of pathogens is usually called the virulence of bacteria. The virulence of various pathogens is not the same. Even the same type of bacteria may vary due to different bacterial types or strains. Virulence is often expressed in terms of median lethal dose (LD50) or median infective dose (ID50), which is the minimum number of bacteria or amount of toxin required to kill or infect half of a certain weight or age experimental animals through a specified route of infection within a certain period of time. Therefore, pathogenicity is a qualitative concept; virulence is a quantitative concept.

Whether pathogens can cause disease after invading the body is closely related to the virulence of the bacteria, the number of invaded organisms, the invasion portal, the body's immunity, and environmental factors.