Prologue

PROLOGUE

YOU’RE NOT A solid thing.
You’re not a finished product.
You are a moving process. A living machine that’s constantly rebuilding itself from the inside out.

At the center of it all is a code. Three billion letters long. Written in molecules. Copied in every cell of your body.

That code builds proteins.
Proteins build everything else.

Not just skin and bones.
Not just muscles and blood.
Everything.

Enzymes. Hormones. Neurotransmitters. Immune cells. Mitochondria. Memory. Mood. Sex. Disease. Thought.

You are a biochemical orchestra of unimaginable complexity and most of it is happening without your permission.

This book is not about food.
It’s not about cells.
It’s not about genes.

It’s about how everything in your body works, together, at once, and what that means for the one person who has to live inside it.

We’ll start at the molecular level with the base pairs, ribosomes, and proteins.
Then we’ll build the rest.
The immune system. The brain. The signal loops. The sex stuff. The failures. The mutations. And the fixes.

We’ll go all the way to the edge where biology starts to glitch and the code writes back.

This isn’t a textbook.
This is the manual no one gave you.

You are chemistry. And now, you’re going to learn to read it.