Which statement best reflects the impact that psychotherapy for depression may have on heart disease? depression causes heart disease, so if psychotherapy cures the depression, then the heart disease will be cured as well. heart disease can cause depression, and in such cases psychotherapy for depression is ineffective. depression and heart disease are correlated, and the risk of heart disease can be reduced by treating depression. psychological disorders are not related to physical disorders, and so psychotherapy would have no impact on the development or progression of heart disease?