Final answer:
Increased mortality among individuals with serious mental disorders is attributed to a combination of heart disease, diabetes, and respiratory disorders, with heart disease being a significant contributor.
Step-by-step explanation:
Increased mortality among individuals with serious mental disorders is largely due to heart disease, diabetes, and respiratory disorders; therefore, the correct answer is D: All of the above. Extensive research has established that patients with serious mental disorders such as major depressive disorder (MDD) often face comorbid chronic noninfectious diseases, including heart disease, which they are more susceptible to compared to the general population. The association between mental disorders like depression and an increased risk of heart disease has been recognized for decades, with studies showing that individuals with disorders such as depression and bipolar disorder are at an increased risk of heart-related mortality.
Chronic stress associated with mental illness may also lead to physiological changes that increase vulnerability to these conditions. Therefore, the interconnected nature of mental and physical health is a crucial aspect of understanding and addressing the increased mortality in individuals with serious mental health issues.