Mental Health disorders vary significantly from major depressive disorder and schizophrenia to sleep disorders and PMS, from personality disorders and mental retardation to relational problems and adjustment disorders.
According to the National Institute of Mental Health, while mental disorders are common in the United States, their burden of illness is particularly concentrated among those who experience disability due to serious mental illness (SMI). The overall prevalence of SMI (excluding developmental and substance use disorders) is about 5% and is higher in Caucasians and females.
About 50% of the patient with mental conditions experience recurrent or chronic course of illness. Moreover, 20-30% will not have a satisfactory response to traditional medication or therapy trials.
The lethality from mental conditions is extremely high. Suicide is the 4th leading cause of death in the United States for adults in age range from 18 to 65, surpassing other causes including diabetes, stroke, and homicide. But besides suicide patients with many mental conditions are more susceptible to other conditions known to shorten the lifespan.
Substance use and depression are known to increase the body’s vulnerability to infections, as well as decrease attention and concentration, leading to accidents and traumas. Dementia is associated with an increase in infectious diseases and metabolic disturbances which may lead to delirium and subsequently death. Insomnia on its own is a factor for reducing the lifespan.