Answer:
Psychological factors affecting medical conditions.
Step-by-step explanation:
Psychological factors affecting medical conditions is a concept that explains to us how the ways individual's Behavior might influence the treatments of that person's ailments. Peoples attitude to their medical conditions can make their condition to be better or be worse and in worst cases it might lead to death of that person or individual.
For instance in one of the examples given in the question above which is stress. Stress can do nothing beneficial to people than to make sure that the heart weakens.