Part of the Foresight Tackling Obesities project, the Obesity System Influence Diagram [shiftn.com] consists of a causal loop map that provides a systemic insight into the multiplicity of factors contributing to the obesity epidemic. The 108 drivers of obesity were compiled from 38 science reviews, and woven into a systemic diagram by the positive and negative influence arrows that ultimately link the variables into a web of causal relationships.

Via Visual Complexity.