Craig Phillips’ research deepens the understanding of how obstructive sleep apnoea (OSA) affects overall health, especially its links to cardiometabolic disease. By pioneering studies such as the first global evaluation of OSA’s impact on arterial stiffness and the use of a CPAP‑withdrawal paradigm, he has clarified the cardiovascular and metabolic consequences of OSA. His randomized controlled trials and experimental work on blood‑pressure control, post‑prandial lipidaemia, insulin sensitivity, and weight‑loss interventions provide evidence that informs both clinical practice and future research, extending the reach of sleep‑medicine insights into cardiology, obesity and endocrinology. This broad, mechanistic perspective helps shape treatment strategies and highlights the systemic importance of managing OSA.