Dr. Navaz Habib, known as the Vagus Nerve Doc, is a functional medicine expert and bestselling author of "Activate Your Vagus Nerve" and "Upgrade Your Vagus Nerve," dedicated to empowering health through vagus nerve activation. He is the founder of Health Upgraded, an online health program that guides clients to enhanced well-being using his VAGUS protocol. You can also learn from Dr. Habib as the host of the Health Upgrade Podcast! Dr. Teulieres co-founded the Charity PHELIX, which is dedicated to the research and development of phage-based diagnostics and treatments and has partnered with world-class healthcare professionals and researchers from the University of Leicester. Since 2003, he has been in private clinical practice in Paris and Lisbon focusing on the treatment of immunological and chronic inflammatory and neurodegenerative diseases.