This paper addresses the issue of planetary health under a multidisciplinary profile. It starts with defining the scope of planetary health, retracing its most salient historical points. It then reflects on the socio-political changes needed to achieve transformational change in society. The concepts of health literacy and environmental health literacy are explored as a useful means of disseminating and raising awareness about planetary health. Finally, a case study related to heart disease is explored to demonstrate why this approach is more necessary today than ever.