Changing people's health behaviour is a complex task. Showing gory pictures may be a turn off.. it doesn't seem to work showing smokers pictures of black lungs...

The most appropriate means of generic and specific interventions to support attitude and behaviour change at population and community levels http://www.nice.org.uk/PH6

A ‘Stages of Change’ Approach to Helping Patients Change Behavior http://www.aafp.org/afp/2000/0301/p1409.html

The most appropriate means of generic and specific interventions to support attitude and behaviour change at population and community levels http://www.nice.org.uk/PH6

A ‘Stages of Change’ Approach to Helping Patients Change Behavior http://www.aafp.org/afp/2000/0301/p1409.html

Changing Health Behaviors: From Facebook to Smartphones ...