The poison of anger hurts the organs The factors that cause cancer are very complicated, and mental factors play an important role in the occurrence and development of cancer. Modern medical science has found that cancer is more likely to occur in people who have been frustrated and under emotional stress such as mental depression, anxiety, depression, bitterness, fear and sadness for a long time. Psychological factors do not directly cause cancer, but they tend to influence and lower the immunity of the body with a chronic and continuous stimulation, which increases the incidence of cancer. Some scholars from the University of London, after more than 20 years of research, found that human personality can be divided into 4 types, and there are some relationships between personality and diseases as follows. Type 1 personality: dependent, prone to a sense of despair and powerlessness when worrying, and prone to cancer; Type 2 personality: less dependent, prone to anger and excitement when worrying, and prone to ischemic heart disease; Type 3 personality: has both sides of Type 1 and 2. Type 4 personality: has self-discipline, good stress ability, and is a normal type. The cause of death from disease in these people mentioned above is also clearly in line with such a pattern. Therefore, some people call the type 1 personality “cancer personality”, “tumor personality”, and others call it “C-type behavior”. Cancer personality, generally known as C personality, refers to the personality traits that predispose individuals to cancer. According to relevant statistics, cancer patients generally have certain specific personality traits, and those with these personalities are more prone to cancer than others, hence the term “cancer personality”. Most of the cancer patients have experienced major life changes such as death of relatives, loss of love, divorce, unemployment, demotion or natural or man-made disasters before they got sick, and these major life events combined with negative emotions are very likely to form “cancer personality”. These people are introverted, superficially submissive, no complaints, but inwardly resentful, painful struggle, with a history of mental trauma; depressed, good sulking, but do not love to vent; a very small thing in life can make them anxious, the mood is always in a state of tension; on the surface to sacrifice themselves for the sake of others, but inwardly but very reluctant; encounter difficulties, not try to overcome at first, dragged to And finally to do the fight of the beast; fear of competition, escape from reality, trying to appease the method to achieve a false psychological balance, etc.. The human nervous system, endocrine system and immune system share a set of signals. Once disturbed by “cancer personality”, it will lead to disorder of neuroendocrine activities and dysfunction of organs, and reduce the immune ability of the body and weaken the immune surveillance function, which will affect the surveillance role of the immune system to identify and destroy cancer cells and lead to transformation and mutation of cancer cells.