Primary care options to prevent mental illness.

The common mental disorders, mainly anxiety and depression, constitute a major public health problem, incurring considerable costs in terms of use of health services and time lost from work. Risk factors include low socioeconomic status, poverty and poor housing, as well as stressful life events and difficulties such as demanding child care, separation or divorce, bereavement, loss of employment and caring for a dependant relative. Population approaches are probably necessary to reduce significantly the burden of such mental health problems, but health care measures are far from negligible. Primary care professionals have regular opportunities to identify people at risk of mental health problems and refer them to welfare and social support services (primary prevention). A number of interventions among high-risk groups have been shown to be effective, including problem-solving training and cognitive-behavioural approaches. The most important tasks in primary care are to identify people with depression, alcohol and drug misuse and eating disorders as early as possible in the course of their illness and to institute effective treatment (secondary prevention). Primary care teams should also join in shared care arrangements for patients with chronic disabling mental illnesses, in order to prevent recurrences and relapses (tertiary prevention).