Brain Maker

"Put simply, everything about our health — how we feel both emotionally and physically — hinges on the state of our microbiome." Microbial influence : The human microbiome consists of trillions of microorganisms, primarily bacteria, living in and on our bodies. These microbes outnumber our own cells by a factor of 10 and contain over 100 times more genes than the human genome. Broad impact : Far from being passive inhabitants, these microbes play critical roles in: The microbiome's effects extend well beyond the gut, influencing distant organs like the brain. It impacts mood, cognition, and ev

Lesson 1: The microbiome is a crucial "organ" influencing overall health and brain function

This principle from Brain Maker is backed by David Perlmutter's extensive research and real-world examples. Understanding it deeply can shift how you approach decisions, relationships, and long-term planning in meaningful ways.

Lesson 2: Diet shapes the microbiome, which in turn impacts inflammation and disease risk

A core theme in Brain Maker is humility about what we can and cannot know. David Perlmutter shows that the most resilient people and systems aren't those that predict correctly — they're the ones built to survive being wrong.

Lesson 3: Gluten and processed fructose are major threats to gut and brain health

This principle from Brain Maker is backed by David Perlmutter's extensive research and real-world examples. Understanding it deeply can shift how you approach decisions, relationships, and long-term planning in meaningful ways.

How to Apply Brain Maker's Lessons

The real value of Brain Maker lies in its applicability. After reading, the most important step is identifying which of David Perlmutter's principles speak most directly to your current situation.

Consider keeping a journal while reading — noting where the ideas challenge your current approach and where they confirm what you already suspected. The friction of your own resistance often points to the most important insights.

Key Quote

"The microbiome is a crucial "organ" influencing overall health and brain function" — David Perlmutter, Brain Maker

About the Author

David Perlmutter is the author of Brain Maker. The book reflects years of research, observation, and synthesis of evidence from multiple disciplines.