MSc rNutr IFMCP MBOG RSM

Adriano dos Santos is a Registered Nutritionist (rNutr) and certified Institute for Functional Medicine Practitioner (IFMCP) specialising in the intersection of circadian biology, sleep science, and gut microbiome health. Known professionally as The Circadian Nutritionist™, he holds a Master of Science in Sleep Medicine from the University Hospital of Bern, Switzerland, and the University of Oxford, where he continues as a Research Fellow at the Sleep and Circadian Neuroscience Institute (SCNi). Adriano also serves as Education Officer at the Oxford Personalised Medicine Society.

His clinical research focuses on how disrupted circadian rhythms, from shift work, jet lag, or irregular lifestyle patterns can alter the gut microbiome and contribute to metabolic, immune, and neurological dysfunction. He has published in several high-impact journals. Adriano is the author of The Gut–Sleep Solution: A guide to balancing energy, hormones and metabolism, and the founder of ADS Vitality, a clinical practice based in the Netherlands dedicated to circadian nutrition and integrative health.

“As someone who lost his own father to cancer, I understand how profoundly the disease reshapes every part of a person’s life, including sleep, nutrition, and daily rhythms. Yes to Life gives people real options and real support when they need it most. I am proud to support an organisation that champions an integrative approach to cancer care, because helping people reclaim their body’s natural rhythms is one of the most powerful things we can do alongside conventional treatment.”