What is a model that describes the relationship between stress and disease?

The stress-diathesis model is a theory in psychology and medicine that proposes that psychological stress can increase the risk of developing a physical illness when a person has a pre-existing vulnerability, or "diathesis," to that illness. The diathesis can be genetic, biological, or environmental.

The stress-diathesis model has been used to explain the relationship between stress and a variety of diseases, including depression, anxiety, heart disease, and cancer. For example, research has shown that people who have a genetic predisposition to depression are more likely to develop the disorder when they experience stressful life events, such as job loss or divorce.

The stress-diathesis model is a complex theory that is still being developed and refined. However, it has been a valuable framework for understanding the relationship between stress and disease. The model has also led to the development of new treatments for stress-related illnesses, such as cognitive-behavioral therapy and stress management techniques.