Certainly! Here's a 4000-character book description that captures the voice, structure, and themes of your full-length book:

Title: Longevity Decoded: What Works, What Doesn't, and How to Thrive at Every Age

Book Description:

You're not just trying to live longer.
You're trying to live better—with clarity, strength, memory, purpose, and independence.

In a world flooded with anti-aging hype, supplement fads, and billionaire biohacks, Longevity Decoded is your clear-eyed, deeply researched, and powerfully practical guide to what actually works.

Written for readers in their 30s, 40s, 50s, 60s, and beyond, this book dismantles the noise and builds a blueprint—step by step, decade by decade—so you can extend your health span, not just your lifespan.

Inside, you'll learn:

Longevity Decoded blends cutting-edge science with grounded, human insight. You won't find silver bullets or miracle pills here. You'll find rhythm, clarity, consistency, and the ability to adapt your protocols through each decade of life.

Whether you're recovering from burnout in your 40s, navigating menopause in your 50s, trying to preserve mobility in your 60s, or planning to hit 90 with your mind intact, this book gives you the tools to do it—without perfectionism or obsession.

It's not about "staying young." It's about staying yourself—as long as humanly possible.

If you want to move with purpose, age with dignity, and outlive your fears—not just your years—this book is your new operating system.