Your Gut: Your Second Brain

This free course introduces Colin Austin’s idea of the gut as a second brain: an intelligent control system that helps regulate appetite, food choices, stress, mood, immune function, and overall wellbeing. The course explores the relationship between the gut, beneficial microbes, soil biology, modern food, and human health. It is designed as an introduction to Colin’s thinking, rather than a technical growing course. You do not need any scientific background to begin. The course starts with the basic idea that the body works as an integrated system, then explains how the gut, microbes, food, soil, and plants may all be connected.

What You Will Learn

• Why the gut is often described as a second brain.
• How the gut may influence hunger, cravings, fullness, stress, mood, and immunity.
• Why Colin believes modern food may be missing important beneficial microbes.
• How soil biology, plants, and microbes may influence the food we eat.
• Why Colin sees the modern food system as a major health challenge.
• How Gbiota proposes to grow food that supports beneficial microbial life.

About the Course

This course is based on the work of Australian innovator Colin Austin, who developed modern wicking bed systems and later expanded his work into Gbiota technology. Colin’s approach is practical, systems-based, and experimental. Rather than looking at the body as a set of isolated parts, he encourages people to think about the body, gut, microbes, soil, plants, and food as one connected living system. The course presents Colin’s view that beneficial microbes are an important missing link in modern food and that growing food in biologically active soil may be one way to restore this connection.

Who This Course Is For

• People interested in gut health and the gut-brain connection.
• People who want to better understand appetite, cravings, and food choices.
• Gardeners interested in the link between soil, plants, microbes, and health.
• People concerned about modern food, chronic disease, and loss of food quality.
• Anyone curious about Colin Austin’s Second Brain and Gbiota ideas.

Course Modules

Module 1: The Gut as a Second Brain

This module introduces the idea that the gut is more than a digestive organ. Colin explains how the gut may act as a control system, using microbial and cellular communication to help regulate appetite, cravings, fullness, stress, mood, and immune responses.

Module 2: How the Body Regulates Itself

This module explores homeostasis, set points, hunger, fullness, and the body’s ability to self-regulate. It introduces the idea that weight and appetite may be influenced by biological feedback systems rather than willpower alone.

Module 3: Modern Food and the Health Crisis

This module looks at Colin’s concerns about modern food. It explores the possibility that food may be energy-rich and hygienic, yet still lacking some of the beneficial microbial life that humans evolved with.

Module 4: Soil, Plants, and Beneficial Microbes

This module introduces the connection between soil biology, plant growth, and the food we eat. Colin explains his view that beneficial microbes can be bred in soil under the right conditions of nutrients, air, water, and living biology.

Module 5: Colin’s Proposed Solution

This module introduces the Gbiota approach: growing fresh food in living soil systems designed to support beneficial microbes. It provides a bridge between the free Second Brain Course and the more practical Gbiota growing materials.

Getting Started

Begin with Module 1, even if you already know something about gut health, nutrition, or gardening. Colin’s Second Brain approach is based on systems thinking, so it is important to understand the whole concept before moving into the practical growing material. By the end of the course, you should understand Colin’s core idea: that the gut, microbes, soil, plants, and food may be part of one connected living system, and that restoring this connection may be important for future health.