The duty and function of these integrated levels is to communicate with each other at all times. If there is a lapse in communication between these levels, disease may result. Sometimes only one of these levels is primarily responsible for disease, such as the mental or emotional levels in psychological diseases, or the physical level in minor ailments and injuries. If the condition persists, however, it will eventually result in the involvement of all levels, leading to a deeply ingrained disease process. Traditional and holistic medicines recognize all of these levels, and each one is addressed in order to restore balance to an individual, offering a truly holistic approach to healing.