Table 1.

Research approaches to environment and obesity (adapted from Jensen et al. [6] and Ulijaszek [11]).

environment	focus	mechanism	societal framing
bodily	fat deposition in human or rodent organisms	physiological processes, gene environment interactions, epigenetics	science
familial	population obesity in children and adolescents	energy expenditure and intake	people
institutional	institutional food services	policies and their implementation	government
food	population obesity	energy intake	corporations
built	population obesity	energy expenditure	urban planning