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The evidence for specific risk factors for Alzheimer’s disease, vascular dementia and all cause dementia is increasing rapidly in quantity and quality. This has enabled the compilation of risk assessment tools for Alzheimer’s disease (1), and their validation (2). It has also supported the promulgation of public health messaging about dementia risk reduction or dementia prevention. In general these developments are strong advances in the field of dementia prevention. However, the oversimplification of the findings and possible over-or mis-interpretation of their meaning, poses risks to accurate and effective knowledge translation in this field. Lack of balance in the interpretation of evidence on risk factors for dementia may lead to trials of interventions for dementia prevention that are ineffective. This will waste resources and create pessimism about dementia prevention research. Two potential problems that may occur when translating evidence from observational research into prescriptions for prevention are identified here. The first is the generalisation of specific findings about risk factors either to multiple types of dementia or to multiple populations, when the evidence is in fact relevant to specific populations or outcomes. The second is the inference that reversal of a risk factor will lead to prevention, without knowledge of the threshold at which a factor becomes a ‘risk’, or evidence that reversal of the risk factor also reverses neuropathological processes instigated or caused by the risk factor.

OVERSIMPLIFICATION OF DEMENTIA RISK REDUCTION MESSAGING IS A THREAT TO KNOWLEDGE TRANSLATION IN DEMENTIA PREVENTION RESEARCH