Essay

Human Biology Cannot Match the Speed of Synthetic Change

It never could. And I’m watching the gap widen in real time. Here’s what the next 1–3 years of American health will look like — exactly how I see it.

Chelsea M. Thacker · November 19, 2025

We are living in the biggest biological mismatch in human history.

The full essay is published on Substack. This page holds its place in Living Terrain, where it connects to the rest of the work.

Where this sits

Also belongs to