Passage Five Doctors say anger can be an extremely damaging emotion, unless you learn how to deal with it . They warn that angry hostile feelings can lead to heart disease, stomach problems, headaches, emotional problems and possible cancer. Anger is a normal emotion that we all feel from time to time. Some people express anger openly in a calm reasonable way. Others explode with anger, and yell. But other people keep their anger inside. They can not or will not express it. This is called repressing(压制) anger. For years many doctors thought that compared with expressing anger, repressing anger was more dangerous to a person’s health. It may speed the heart rate, raise blood pressure or sugar into the blood and narrow the blood vessels. To avoid these problems, doctors thought a person should let the anger out by expressing it freely. But recently some doctors disputed this. They said that people who express anger repeatedly and explosively did cause, in fact, more and not less anger. They said these too can cause medical problems. Some doctors say that both repressing and expressing anger can be dangerous. Expressing anger intensively may be more likely to develop heart disease, and keeping anger inside may face a greater danger of high blood pressure. Doctors say the solution is learning how to deal with anger. They say the first step is to admit that you are angry and to recognize the real cause of the anger, then decide if the cause is serious enough to get angry about. If it isn’t, they say, " Don’t express your anger while angry. Wait until your anger has cooled down and you are able to express yourself calmly and reasonably. " Doctors say that a good way to deal with anger is to find humor in the situation that has made you angry. They said that laughter is much healthier than anger. The author of the passage is most probably a(n) ______.

A. patient
B. editor
C. psychologist
D. surgeon