Cracking the Vitamin Code: How to Build Your Own Supplement Stack for Health, Energy, and Longevity Many people take supplements—but few know what to take, when to take it, or how to stack them for maximum results . Whether you're struggling with low energy, brain fog, weakened immunity, weight gain, or just want to feel your best, the truth is clear: supplementation is no longer optional . In today's world of processed food, chronic stress, and nutrient-depleted soil, even the cleanest diets often fall short. In this groundbreaking guide, Dr. Ernesto Martinez—a leader in holistic health and human optimization— breaks down the science of vitamins, minerals, and herbal supplements , and shows you exactly how to build a personalized stack tailored to your body, your lifestyle, and your goals. Inside you’ll discover: The essential vitamins and minerals for energy, immunity, sleep, skin, libido, and performance - The difference between fat- and water-soluble vitamins —and why it matters - How to avoid dangerous supplement combinations - When to choose natural vs. synthetic supplements - What supplements help prevent bone loss, boost brainpower, or improve cardiovascular health - How to build a supplement stack for longevity, fat loss, muscle gain, or anti-aging - How vegetarians and vegans can optimize nutrient intake - How to get the most from your diet—and know if you’re still missing key nutrients Whether you're new to supplements or want to optimize your current routine, this book gives you the answers to the most common supplement questions—plus insights from the latest nutrition science and medical research. Dr. Martinez has helped thousands of patients transform their health through targeted supplementation. Now, he's handing you the blueprint. If you’ve ever wondered: ✔ What supplements should I take every day? ✔ Do I really need vitamins if I eat healthy? ✔ Will supplements help me lose weight or feel better faster? ✔ What are the best supplements for men, women, or people over 40? ✔ How can I build a supplement stack that actually works? Cracking the Vitamin Code is your step-by-step manual. Don’t guess. Don’t waste money. Don’t fall for gimmicks. Learn how to take control of your health—one supplement at a time. "Dr. Ernesto Martinez's book is an eye-opener into supplementation. All of my answers were answered from A to Z, and I feel well-equipped to build my own supplement stack. I highly recommend this book for anyone trying to improve their health." Dr. Emilio Barrantes MD. Ph.D.