Decipher the secrets of immune cells
Immune cells are the core of human immune system, and the function of human immune system is mainly accomplished by various immune cells to protect the body and the city from being captured. There is a strong innate immune system in the human body. Under normal circumstances, immune function can destroy 3000-6000 cancer cells produced by human body every day. However, with the aging of human body or imperfect immune function, various diseases will take advantage of it.
What is the relationship between immune cells and human health?
0 1, immune cells and life span
With the growth of age, the speed of immune cell decline exceeds the speed of renewal, the immune system gradually declines, and the immune function of human body also declines, and various diseases follow one after another. Studies on centenarians show that the number and activity of immune cells are equivalent to those of young people (30-40 years old). The decline of immune function has obviously affected the health, disease and death of the elderly.
02, immune cells and aging
Professor Wolford put forward the theory of immune aging in 1962, and thought that the decline of immune function is an important factor causing the aging of the body-with the increase of age, the aging of immune organs, the decrease of immune cells and cytokines, the gradual weakening of immune function, and the increasing incidence and mortality of infectious diseases and tumors. Medical research shows that human immunity reaches its peak around the age of 20, and then gradually declines with age. This is also one of the main reasons why people are prone to chronic diseases such as infection and cancer after entering middle age.
03, immune cells and tumors
According to the data of National Cancer Center, about 10000 people are diagnosed with cancer every day in China, with an average of 7 people diagnosed with cancer every minute. According to the average life expectancy of 85 years, the cancer rate of China people is as high as 36%, and it is becoming younger.
The immune system can recognize and respond to tumors, and identify and eliminate cancerous abnormal cells through cellular immune mechanism. A healthy and balanced immune system can effectively control the occurrence and development of tumors; Instead, it gives cancer an opportunity.
04. Establish defense.
After bacteria invade the host, they grow and reproduce and release toxic substances, which can cause different degrees of pathological reactions. After the invasion of pathogenic bacteria, it can stimulate the immune system to produce a series of immune responses to fight against it while establishing infection. The victory or defeat depends on the strength of pathogenic bacteria and the body: the immune cells in the body are strong, but they do not form infection; On the contrary, the infection formed but gradually subsided, and the patient recovered or the infection spread.