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 .
Using the mass-media to target obesity: an analysis of the characteristics and reported behaviour change of participants in the BBC's 'Fighting Fat, Fighting Fit' campaign.
The study aim ed to assess the characteristics and reported behaviour change of participants in the BBC 's ' Fighting Fat , Fighting Fit ' ( FFFF ) campaign .  A postal question naire survey was sent to a r and om sample of 6000 adults registering with the FFFF campaign at the start of the campaign and 5 months later .  Demographic characteristics , weight , eating behaviour and activity patterns were assessed . In total , 3661 respondents completed the baseline question naire and 2112 ( 58 % ) of these completed a follow-up evaluation question naire 5 months later . The majority of evaluation participants were women and classified as ' overweight ' or ' obese ' . Participants reported significant reductions in weight , and in fat and snack intake , and significant increases in exercise levels , and in fruit , vegetable and starch intake during the 6 months of the campaign . These effects remained significant if non-responders were assumed to have made no change . These results show that mass-media campaigns might make a contribution to weight control at the population level , but particular subgroups such as men and people under 25 may require specifically targeted campaigns . In addition , whilst such campaigns may initially attract obese people , they may be more likely to drop out of the campaign than overweight and normal weight individuals
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 .