In this episode of the Health Upgrade Podcast, we’re joined by Dr. Sabine Hazan, a pioneering gastroenterologist and one of the world's leading voices in microbiome research.

Together, we explore the incredible impact of gut health on overall well-being and discuss her groundbreaking work in microbiome testing, fecal microbiota transplants, and the vital role of Bifidobacteria in human health. Dr. Hazan shares her remarkable journey, from challenging conventional thinking to becoming a global leader in microbiome science. Along the way, we uncover how the gut microbiome may influence conditions such as autism, Alzheimer's disease, and immune resilience, while also examining the effects of antibiotics, modern diets, and other everyday factors that shape our gut ecosystem.

We also take a closer look at the limitations of current microbiome testing, the misconceptions surrounding popular probiotic products, and why personalized, evidence-based approaches, rather than one-size-fits-all solutions, represent the future of gut health. Dr. Hazan explains that restoring a healthy microbiome isn't simply about adding beneficial bacteria. It also requires improving our environment, daily habits, nutrition, and even the way we support children's health from an early age.

If you enjoyed this conversation and were inspired by Dr. Hazan's mission to map the world's microbiome and advance the future of human health, please share this episode with someone who could benefit from it. Every conversation helps raise awareness and supports the research that has the potential to transform all of our health.

Dr. Navaz Habib

Email: podcast@healthupgraded.com
Facebook: https://www.facebook.com/DrNavazHabib/
Instagram: https://www.instagram.com/drnavazhabib/
LinkedIn: https://ca.linkedin.com/in/drnavazhabib

JP Errico
Instagram: https://www.instagram.com/thevnsguy/
LinkedIn: https://www.linkedin.com/in/jp-errico-097629aa

Dr. Sabine Hazan
Website: https://sabinehazanmd.com/

In this episode, I answer one of the questions I get asked the most: "What is a good HRV, and why isn't mine improving?"

FREE LIVE VAGUS NERVE WORKSHOP - "DECODE AND RESET"
AUGUST 25, 2026 @ 7:30pm EST
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The truth is, there isn't one perfect HRV number that everyone should aim for. Instead of worrying about a single reading, it's much more helpful to look at how your HRV changes over time. Your wearable device is there to give you useful information about your body, not to judge your health. Many everyday factors can affect your numbers, and understanding the bigger picture is what really matters.

I also talk about the key health metrics worth paying attention to, including HRV, sleep score, resilience, daily activity, and recovery index. You'll learn what these numbers actually mean and how to use them to make better decisions for your health without becoming overwhelmed by the data.

If you'd like to better understand your HRV and wellness data, join the Health Upgraded team and me for our free interactive workshop on August 25 at 7:30 PM Eastern. Bring your own data, learn how to interpret it, and leave with a personalized plan to improve your health and resilience.

Dr. Navaz Habib

Email: podcast@healthupgraded.com
Facebook: https://www.facebook.com/DrNavazHabib/
Instagram: https://www.instagram.com/drnavazhabib/
LinkedIn: https://ca.linkedin.com/in/drnavazhabib

In this episode, we welcome Dr. Efrat Lemandre, a nurse practitioner and medical disruptor, to explore the challenges and myths surrounding the medical system. Together, we discuss why medical gaslighting persists, the impact of professional indoctrination, and how even well-intentioned doctors may not always have all the answers. Dr. Lamandre shares her personal journey from conventional medicine to functional and integrative practices, emphasizing the importance of curiosity and humility in healthcare.

We debate the roles and responsibilities of both patients and practitioners, tackling big questions like when to trust medical advice and how to advocate for your health. Our conversation touches on the limits of the current system, the need for patients to assemble their own healthcare teams, and the importance of education and self-advocacy more than ever.

If you enjoyed our spirited exchange on medical gaslighting and how to play a proactive role in your health journey, please share this episode with friends and colleagues, especially anyone ready to challenge the status quo or advocate for change in healthcare. Your voice and curiosity matter!

Dr. Navaz Habib

Email: podcast@healthupgraded.com
Facebook: https://www.facebook.com/DrNavazHabib/
Instagram: https://www.instagram.com/drnavazhabib/
LinkedIn: https://ca.linkedin.com/in/drnavazhabib

JP Errico
Instagram: https://www.instagram.com/thevnsguy/
LinkedIn: https://www.linkedin.com/in/jp-errico-097629aa

Dr. Efrat Lemandre
Website: https://www.drefratlamandre.com/