There is a considerable knowledge base about the information needs of patients with cancer (and their relatives and friends). Those needs will vary according to the disease, the stage of disease, the patient and his or her age, social class and culture. Lack of information may lead to increased anxiety and distress, may impact negatively on the patient's satisfaction and may influence a patient's treatment choices. Other articles in this special edition deal with psychosocial interventions and complementary therapies for cancer patients and explore their efficacy. The reality is that these are unlikely to be made available to all cancer patients for reasons of cost and practicability. Information, however, is a relatively cheap intervention that could--and should--be part of standard care. This article explores some of the research about the provision of information for cancer patients.