Gut Health Breakthrough: Kiran Krishnan Reveals the Microbiome’s Power Over Mind & Body l Ep #292

Mental Health

The gut's influence on mental health is profound, with neurotransmitter production and inflammation playing key roles. Kiran Krishnan explains that most serotonin and dopamine are produced in the gut, and a dysfunctional gut can hinder their production and function 1. This dysfunction can lead to increased inflammation, activating the HPA axis and causing a constant fight-or-flight state, which contributes to anxiety and neurodegeneration 2. The gut-brain axis, a complex network of neurological, immunological, and circulatory connections, further underscores the gut's central role in mental health 3.

The gut is surrounded by this very dense neurological system called the enteric nervous system, second highest density nerve endings, even more so than your spinal cord next to the brain.

--- Kiran Krishnan

A leaky gut can exacerbate these issues by allowing endotoxins to interfere with neurotransmitter binding, further impacting mental well-being.

   

Energy Balance

Gut health also plays a crucial role in maintaining brain energy balance, with significant implications for disorders like Alzheimer's. Kiran Krishnan highlights that the brain primarily relies on glucose for energy, and disruptions in the gut-brain-liver axis can lead to energy imbalances 4. In conditions like type 3 diabetes, or Alzheimer's, the brain becomes insulin resistant, impairing its ability to access glucose and leading to cognitive decline. Ketones, often thought to be a backup energy source, cannot adequately compensate for this deficit.

The main point of ketosis is to feed other systems so they don't demand sugar from the brain.

--- Kiran Krishnan

This delicate energy balance is maintained through communication between the gut, brain, and liver, and any disruption can have profound effects on brain health.