In other words, our minds and bodies are very connected. I agree that anger can contribute to stress. One way of reducing stress and learning how to forgive other people and yourself. It can be one of many causes. Often times people need to seek professional help to figure out ways to cope with their stress.
Stress can be a factor in many gastrointestinal problems.
As we said earlier, they are closely linked. One is often related to the other. When a patient comes to see me and says they are stressed. I always make sure they are not depressed as well. The ones I can't control I try not to worry about.