The provisional criteria for age-associated memory impairment (AAMI) attempt to define a potentially treatable decline in mental function found in people over 50 years of age. It is suggested here that the present criteria are likely to apply to a large proportion of those over age 50 in the population. From a psychometric viewpoint the criteria have several short-comings that are detailed. Finally, the social and ethical problems of the wider use of such a diagnosis are adumbrated.