Dr. Diego Bohórquez: The Science of Your Gut Sense & the Gut-Brain Axis

Surgery Effects

Gastric bypass surgery significantly alters gut physiology and food preferences. Diego Bohórquez explains that the surgery involves reducing the stomach size and rerouting the intestines, which changes hormone and neuropeptide release, impacting food choices and diabetes resolution 1. He notes that even gastroenterologists initially knew little about these changes, but research has shown consistent shifts in food preferences post-surgery 2.

The whole idea was, at the very beginning was like, well, if we reduce the surface that is exposed to food, then we can reduce body weight by the simply reduction of surface that is exposed to the food that is absorbed.

--- Diego Bohórquez

These findings highlight the complex interplay between gut structure and brain signaling.

   

GLP-1 Role

GLP-1, a hormone involved in hunger regulation, plays a crucial role in weight loss treatments like Ozempic. Andrew Huberman discusses how GLP-1 acts on the brain and gut to reduce hunger and increase gastric distension 3. Diego Bohórquez adds that GLP-1 is released by neuroendocrine cells in response to nutrients, influencing both immediate food choices and longer-term appetite control 3.

What is happening in the first few milliseconds is the actual choice and the actual feeling of how you feel about food. What is happening in the minutes to hours later is the amount, how much you can eat and when you should stop.

--- Diego Bohórquez

This dual action underscores the hormone's importance in managing hunger and weight.

   

Gut Disorders

Irritable Bowel Syndrome (IBS) and other gut-brain disorders have a complex biological basis. Diego Bohórquez explains that enteroendocrine cells in the gut communicate directly with the nervous system, influencing gut-brain interactions 4. These cells release neuromodulators that can trigger hypersensitivity and pain, contributing to conditions like IBS 5.

They are responsible for triggering the hypersensitivity of the nerve fibers, the colonic nerve fibers, because they detect noxious stimuli.

--- Diego Bohórquez

Understanding these mechanisms is key to developing better treatments for gut-brain disorders.