The Four Villains of Health and Longevity
Four diseases will kill almost everyone you love. They are not random. They are not inevitable. And they are coming. The framework, science, and tools for the fight ahead.
The Mosaic Body and Longevity: What Mutation Tracking Means for Healthspan
A capstone essay closing our series on the Mosaic Body. The new science of somatic mutation, clonal expansion, and mosaic aging is more than an interesting development in molecular biology….
Genetic Mosaicism: Why No Two Cells in Your Body Are Identical
Genetic mosaicism is the condition of having different DNA in different cells of the same body. Every adult has it. A clear guide to mosaicism, chimerism, microchimerism, and the surprising…
Somatic vs Germline Mutations: The Difference That Changes Everything
Germline mutations are inherited from your parents and present in every cell. Somatic mutations arise during life and live in only some cells. The distinction shapes how cancer is treated,…
What Are Somatic Mutations? A Plain-English Guide to the DNA Changes Happening Inside You Right Now
Somatic mutations are DNA changes that happen in your body’s cells throughout life, not at conception. A plain-English guide to what they are, how they arise, why most of them…
Beyond Inheritance by Roxanne Khamsi: A Review
An inaugural entry in HD Reads. Roxanne Khamsi’s Beyond Inheritance is the most important popular biology book of 2026 to date, and the foundation text for a way of seeing…
Clonal Hematopoiesis (CHIP): The Cardiovascular Risk Hidden in Your Blood
By age seventy, somewhere between ten and twenty percent of people carry a population of mutated blood stem cells that quietly double their risk of heart disease. The condition has…
Mosaic Aging: Why Your Organs Age at Different Rates, and Why It Matters
A growing body of work argues that the body does not age all at once. It ages in tiles. The pace at which your fastest-aging organ breaks down, not the…
The Hashimoto’s Breakthrough: Somatic Mutations and the New Model of Autoimmune Disease
A landmark Nature study finds that Hashimoto’s thyroiditis is driven in part by acquired somatic mutations that disable the immune system’s brakes. A new model of autoimmune disease is taking…
The Mosaic Body: How Your Cells Are Quietly Mutating, and Why It’s Rewriting Medicine
A new picture of the human body is emerging from the world’s genome sequencers, and it is not the one most of us were taught. We are not single, settled…
