Summary
The episode works through five questions that students often find difficult in the lesson's four theory families: what encoding a message for an audience involves, how community mobilization becomes lasting organizational change, what distinguishes a syndemic from diseases that simply co-occur, whether low use of a program is a cultural problem, and how a communication plan should change when the problem is a syndemic. It draws on the development of the syndemic concept from Merrill Singer to the COVID-19 pandemic, the thrifty genotype hypothesis and its critics, and evidence on sugary drink taxes from Newfoundland and Labrador and Mexico. Worked examples redesign a hypothetical health message for long-haul truck drivers, trace a hypothetical quit-smoking campaign through the levels of effect, place a recreation department's pilot program in the staged model of organizational change, and sort the findings about an underused rural diabetes prevention program. The harder example joins the syndemic idea to channel selection and shows how a channel survey run through the channels it was testing missed the people at the centre of the syndemic. The hosts close by debating whether sugary drink levies are fair to people with low incomes and agree on three questions for judging any price policy.