The government white paper Health of the nation has highlighted mental health as a key issue for the next decade. Primary care is being encouraged to take a leading role in developing effective services for people with mental health problems. This paper reviews current research on key aspects of mental health in adults: the prevalence of mental health problems, improving detection and management of mental health problems, the role of counselling, and communication between primary and secondary care. Recommendations are made for initiatives in both research and service development.