Transform your health with the

The Proper Human Diet Guidebook

Discover how to improve your health, lose fat, and regain energy with the Proper Human Diet. Created by Dr. Ken Berry, this guidebook walks you through the foundational principles of nutrition and shows you exactly how to make the right food choices for lifelong well-being.

Eat the way your body was designed to

The Proper Human Diet is a simple and effective way to improve your health. It is proven to help you burn fat, support metabolic health, reduce inflammation, and stand up to chronic disease. By following the PHD, you will also experience better mental clarity, improved mood, and steadier energy levels — all while enjoying real, satisfying foods like meat, eggs, and healthy fats.

Ready to reclaim your health?

This guide is for you

Over 60 pages of practical guidance and expert tips

The 11 Core Principles of the Proper Human Diet

A step-by-step breakdown of how to get started

Meal plans, tips, and practical advice to help you stay on track

A section on identifying and eliminating inflammatory foods

Shopping lists of PHD-approved foods

Updated charts and graphics

And so much more

This is for you if you are…

  • Tired of being told to eat 'everything in moderation' while feeling worse every year
  • Stuck — the weight is not moving, the labs are not improving, something has to change
  • Curious about keto, ketovore, or carnivore but drowning in conflicting information online
  • Done with diets that ask you to eat plastic-tasting bars and drink chalky shakes
  • Looking for a way of eating you can actually do for the rest of your life

Built on twenty-plus years of clinical experience

A guidebook built on expertise and integrity

The Proper Human Diet Guidebook was written by Dr. Ken Berry, a board-certified family physician with more than two decades in practice. He has used PHD with thousands of patients in rural Tennessee and taught it to millions more on YouTube.

His mission is simple: to empower you to take control of your health and reverse chronic problems with real, whole food. The guidebook is the same trusted framework, in writing, free.