The Brain Has Bacteria? What the Brain Microbiome Means for Health and Longevity | William Li

The Brain Has Bacteria? What the Brain Microbiome Means for Health and Longevity | William Li

Author: Sarah Ann Macklin January 16, 2026 Duration: 5:45

Watch the FULL podcast here: https://youtu.be/yZDzsfNjG_M


Could your brain host healthy bacteria? This clip explores how parts once taught as sterile, such as breast milk, the bladder, and the brain, contain beneficial microbes, and what they might be doing. We touch on gut and brain communication through the vagus nerve, the idea of dysbiosis versus infection, and why modern findings ask for humility in medicine. Here, I’m discussing practical takeaways like paying attention to how your body feels and using biohacking to monitor health when tests fall short.


William Li in conversation with Sarah Ann


Listen to the full episode⁠⁠ ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠here⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠.⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠


Watch the full episode on YouTube ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠here⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠.⁠⁠⁠⁠⁠⁠⁠⁠


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This episode is sponsored by: NOWATCH: Health tracking reimaginedKnow your body, trust yourself.15% off with code LWBW15 at nowatch.com


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There's a lot of noise out there about what it means to be healthy, and Live Well Be Well with Sarah Ann Macklin cuts straight through it. Sarah Ann brings a grounded perspective shaped by both personal experience and formal study, moving beyond quick fixes to explore what sustainable wellness actually looks like. Each conversation in this podcast feels like a thoughtful exploration rather than a lecture, tackling the interconnected areas of holistic health, practical nutrition, and realistic lifestyle shifts. You'll hear from a range of insightful guests alongside Sarah Ann's own reflections, all aimed at making sense of the information overload. The tone is refreshingly human-this isn't about perfection, but about finding a smarter, more integrated approach to everyday living. Tuning into this podcast feels like gaining a knowledgeable, empathetic friend who believes that feeling well shouldn't feel like a constant struggle. It’s a space for anyone wanting to move past the confusion and cultivate a genuine sense of vitality that fits into a real, busy life.
Author: Language: English Episodes: 100

Live Well Be Well with Sarah Ann Macklin | Health, Lifestyle, Nutrition
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