LONGEVITY with Nathalie Niddam #379: The NEW Biohacking Stack For Gut Healing and Lifelong Vitality | Kiran Krishnan & Forrest Smith
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Oct 17, 2025 
In this conversation, microbiologist Kiran Krishnan focuses on the vital role of gut health and spore-based probiotics while Forrest Smith discusses his pioneering work with red and near-infrared light therapy. They explore the surprising connections between gut and brain health, including the impact of leaky gut on neurodegeneration. Forrest shares insights from his own experiments with red light on the abdomen. Together, they delve into actionable strategies for enhancing longevity and systemic health through the synergy of probiotics and photobiomodulation.
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Microbes And Light Are Complementary
- Life's origins used microbes and light, so combining probiotics and photobiomodulation is evolutionarily complementary.
- Kiran Krishnan argues microbes and light act on different sides of the same gut physiology for synergistic repair.
Stack Light With Probiotics For Faster Repair
- Combine photobiomodulation with probiotics to accelerate gut repair from both cellular and microbial angles.
- Kiran Krishnan explains the light repairs tissue while probiotics rebalance microbes, producing faster results together.
Use Spore Probiotics For Resilient Colonization
- Use spore-based probiotics because they survive environmental exposure and the gastric gauntlet to act as 'universal colonizers.'
- Kiran Krishnan says spores quorum-sense, reduce pathogens, and feed commensals via compounds like subtilicin.