The pace of the technological revolution is outstripping human evolution and, for an increasing number of people, weight gain is the inevitable – and largely involuntary – consequence of exposure to a modern lifestyle.
Tackling Obesities: Future Choices. pdf 
This is not to dismiss personal responsibility altogether, but to highlight a reality: that the forces that drive obesity are, for many people, overwhelming. Although what we identify in this report as ‘passive obesity’ occurs across all population groups, the socially and economically disadvantaged and some ethnic minorities are more vulnerable.
The project’s objectives were to: • use the __scientific evidence__ base from across a wide range of disciplines in order to identify the broad range of factors that influence obesity, looking beyond the obvious • create a __shared understanding__ of the relationships between key factors influencing levels of obesity and their relative importance • build on this evidence to identify __effective interventions__ • analyze how future levels of obesity might change and identify the most effective __future responses__.
Access a report and CLD on obesity
here