Quality of life research in adults with growth hormone deficiency (GHD) is a developing field. It has been recognised that adults with childhood onset GHD suffer social and psychological disadvantages. The effects of GHD of adult onset have only been shown relatively recently. Assessment of these patients, using measures of physical and psychological well-being, has demonstrated that adults with GHD perceive themselves as much less healthy compared with matched controls. The majority of studies investigating the effects of growth hormone replacement therapy indicate that quality of life improves with treatment, although this is not a consistent finding.