Craig Phillips was the first in the world to evaluate the impact of obstructive sleep apnea (OSA) on arterial stiffness. He also pioneered a CPAP withdrawal paradigm to better understand the health consequences of OSA and has explored pharmacological weight‑loss approaches in OSA patients. His recent groundbreaking projects include investigating how OSA affects brain vascular function and the brain’s waste‑clearance processes that are linked to dementia.