Several specific population interventions that achieved a Class I or IIa recommendation with grade A or B evidence were identified , providing a set of specific evidence -based strategies that deserve close attention and prioritization for wider implementation .
Effective interventions included specific approaches in all 6 domains evaluated for improving diet , increasing activity , and reducing tobacco use .
The writing group also identified several specific interventions in each of these domains for which current evidence was less robust , as well as other inconsistencies and evidence gaps , informing the need for further rigorous and interdisciplinary approaches to evaluate population programs and policies .
This systematic review identified and grade d the evidence for a range of population -based strategies to promote lifestyle change .
BACKGROUND Poor lifestyle behaviors , including suboptimal diet , physical inactivity , and tobacco use , are leading causes of preventable diseases globally .
Although even modest population shifts in risk substantially alter health outcomes , the optimal population -level approaches to improve lifestyle are not well established .
Effects of promotional materials on vending sales of low-fat items in teachers' lounges.
This study examined the impact of an environmental intervention in the form of promotional material s and increased availability of  low-fat items  on vending machine sales . Ten vending machines were selected and r and omly assigned to one of three conditions : control , or one of two experimental conditions . Vending machines in the two intervention conditions received three additional low-fat selection s. Low-fat items were promoted at two levels : labels ( intervention I ) , and labels plus signs ( intervention II ) . The number of individual items sold and the total revenue generated was recorded weekly for each machine for 4 weeks . Use of promotional material s result ed in a small , but not significant , increase in the number of low-fat items sold , although machine sales were not significantly impacted by the change in product selection . Results of this study , although not statistically significant , suggest that environmental change may be a realistic means of positively influencing consumer behavior
Several specific population interventions that achieved a Class I or IIa recommendation with grade A or B evidence were identified , providing a set of specific evidence -based strategies that deserve close attention and prioritization for wider implementation .
Effective interventions included specific approaches in all 6 domains evaluated for improving diet , increasing activity , and reducing tobacco use .
The writing group also identified several specific interventions in each of these domains for which current evidence was less robust , as well as other inconsistencies and evidence gaps , informing the need for further rigorous and interdisciplinary approaches to evaluate population programs and policies .
This systematic review identified and grade d the evidence for a range of population -based strategies to promote lifestyle change .
BACKGROUND Poor lifestyle behaviors , including suboptimal diet , physical inactivity , and tobacco use , are leading causes of preventable diseases globally .
Although even modest population shifts in risk substantially alter health outcomes , the optimal population -level approaches to improve lifestyle are not well established .