In appreciation of Sir Philip Randle: the glucose-fatty acid cycle.

The coordinated regulation of metabolic fuel selection is crucial to energy homeostasis. Philip Randle and his colleagues developed the fundamental concept of interplay between carbohydrate and lipid fuels in relation to the requirement for energy utilisation and storage. Their insight has fashioned current understanding of the regulation of metabolism in health and disease, as well as providing a springboard for research into the roles of lipid derivatives in insulin resistance and, at the transcriptional level, lipid-regulated nuclear hormone receptors.