Health anxiety is costly for the social and health care system and cause suffering and disability for the patients. This study will hopefully form the basis of an effective and evidence-based group therapy for patients with impairing health anxiety and thereby help increase the patients' quality of life and functional level and reduce social and health care costs. As more general practitioners are trained in cognitive behaviour therapy and Shared Care is introduced into primary care, elements of this developed group-CBT can be used for prevention and treatment of patients with lesser degree of HA in primary care.