How does the diathesis-stress model explain how some people get sick when exposed to stress while others remain healthy?​

A. The diathesis-stress model suggests that some people are predisposed to disease because of some genetic or biochemical weakness or vulnerability.
1. Acquired vulnerability may also constitute a diathesis.
2. For individuals with such predisposition, even low levels of stress may prompt the development of disease.
B. For individuals without the predisposition, low levels of stress will not prompt the development of disease; even high stress may not.