About psychotherapy and psychosomatics.

There are some interesting facts.
1. From 60% to 80% of all deseases are psychosomatic. It means that a phisical desorder apears because of psychological reasons. The ethiological treatment then would be psychotherapy.
2. From 30% to 50% of all patients in the hospital need only some psychological correction and do not need any medication.
3. The treatment of patients with application of psychotherapy coast three times cheaper then without psychotherapy

The reasonable question: why psychotherapy is not is not used in general practice and internal medicine as it should be?