To nudge, or not to nudge, that is the question

The use of techniques from behavioural science to nudge populations in subtle ways to choose behaviours and activities positive to their health and wellbeing is certainly fashionable. One question, yet to be resolved, is whether these nudges will become integral components of public health policy or just passing fads. There should be scope for nudging to play an important role augmenting other elements of health promotion and public health policy. This is likely to depend on whether or not the evidence base on the effectiveness and cost effectiveness of different types of health nudges, targeted at different population groups and in different settings, develops sufficiently.