The biggest influence on health is depression and anger.

Emotion is the emotional external reaction of a person's psychological state, which can be roughly divided into two categories: one is positive emotion, such as excitement, happiness, hope, courage, tranquility, goodwill and harmony; The other is negative and depressed emotions, such as pain, panic, anger, melancholy, depression, dissatisfaction and disappointment. Positive emotions can make people feel happy and relaxed, stimulate fighting spirit and spirit, and are beneficial to health; Negative emotions can make people depressed and disheartened, which is harmful to health. According to modern medicine, depression and anger have the greatest impact on health.

Anger can secrete adrenaline and norepinephrine from the adrenal medulla of human body. Adrenaline can cause shortness of breath, rapid increase of red blood cells, blood coagulation, tachycardia and hypertension, and induce migraine, hypertension and heart disease.

Depression can reduce the secretion of digestive juice, reduce appetite and even cause digestive system diseases; Depression can also increase the secretion of adrenocortical hormone, make immune function disorder, make white blood cells or normal antibodies unable to distinguish between friend and foe, and kill a large number of normal cells while devouring germs; Depression can also make qi and blood stagnate, induce cell canceration and make it multiply viciously. A British scholar studied 225 cancer patients and found that 155 of them had suffered from mental trauma or long-term sadness and depression.