Mark Sisson Books

The popularity of the low carb/paleo/Primal way of eating has exploded. These Primal recipes provide the foundation for a lifetime of delicious, healthy eating, high energy, and protection from com...

Primal blueprint quick easy meals

By Mark Sisson

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These mouth-watering recipes with easy-to-follow instructions will get you in and out of the kitchen in 30-minutes or less. They make preparing delicious, fat-burning, primal meals easier than ever.

The Primal Blueprint: Reprogram Your Genes For Effortless Weight Loss, Vibrant Health, And Boundless Energy

By Mark Sisson

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The keto reset diet

By Mark Sisson

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Going "keto" by eating in a high-fat, moderate-protein, and low-carb pattern enables you to break free from the disastrous effects of carbohydrate dependency. Instead, you'll reset your metabolism...

Primal endurance

By Mark Sisson

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The new primal blueprint

By Mark Sisson

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A comprehensive guide to promoting optimal gene expression and longevity, honoring the evolutionary health model through 10 diet, exercise and lifestyle laws.

How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.