Severe depression can kill a person, but not because of the disease itself, which causes organic lesions in an organ or system of the body. Rather, it is because the patient will be very depressed after the illness, lose all interest, feel useless, have no hope for the future, and want to escape from the objective reality, in this case, the patient is very likely to have a false perception of death, will think that death is only a temporary avoidance of reality, and does not fear death, then the patient will appear suicidal behavior, so depression can Therefore, depression can cause death.