Psychological rehabilitation implies dedicated health care focused on improvement and restoration of cognition and mental health with optimal results especially during recovery from or after illness, injury or surgical procedure. It involves a team of trained therapists, nurses, psychologists, nutritionists, and paramedical staff. Residential and long term rehabilitation at rehabilitation centres also helps persons recover from a wide array of ailments caused by substance abuse or mental disorders. Rehabilitation centres are also meant for treatment of depression induced by the socio-economical problems such as unemployment. Rehabilitation centres have the potential to assist many persons in dire need of help, by addressing many problems which relate to the quality of human health in communities and in the society at large.