Behaviour is only partly an individual moral issue; where behaviour harms the person, family, or wider community, it provokes demands for intervention. in the past, many harmful behaviours that were considered either a matter for the individual or for policing have been labelled public health issues: indeed, it is becoming difficult to identify behaviours and social ills that are not public health concerns. Some come into traditional social interventions, such as encouraging more exercise, although increasingly with a behavioural focus. the least active in society may benefit from telephone support, based on stages in the Behaviour Change Wheel framework. 1 Community exercise, with its social and motivational benefits, may especially help to reduce fragility fractures in sufferers of osteoporosis, but it needs public health leadership, not least in encouraging service collaborators and attendance. 2 despite working through the stages of risk identification, awareness, and management, health assessments such as the five-year checks offered by the NHS for those aged 40-74 years, may not be sufficient to change behaviour independently. a cross-sectional study in leicester showed variation in uptake between socioeconomic and demographic groups and no association with adopting a healthy lifestyle. 3 the pressure on clinicians to mediate behaviour as well as to treat the results of poor lifestyle may contribute to the high prevalence of stress in doctors-locke and lees identify that a review of the evidence base for interventions provides a useful summary of successful approaches, with the need for interventions to be tailored to particular specialties and contexts. 4 Pharmacists also play an important part in advising the public, and integrated pharmacy curricula are helping to ensure they have the appropriate knowledge and skills to do so. 5 Meanwhile, there is a shortage of health workers in rural and remote areas of several countries, leading to a 'mal-distribution' of clinicians which is beginning to be tackled via financial and social incentives, as well as fines for quitting posts. 6 Careful planning and institutional support are key features of these interventions, including monitoring, site visits, phone calls, and regional meetings. For some risks to health there have been calls for mandatory controls, including the current controversial suggestion that children should not start school in the UK until there is evidence of completing the infant vaccination schedules. 7 With herd immunity declining for dangerous infections such as measles, the debate is timely, although, as with so many proposed public health actions, the dilemma includes how to educate the public about the complexity of vaccination. the issues include community and global health security as well as the rights of the individual. Compulsive gambling is a risk behaviour of a different sort, but now also a public health topic; mandatory control is not on the cards, so to speak, despite the existing legislation and licencing not deterring the deter...