The purpose of this book is to alert you to the truth of common health advice, and to provide a thoughtful and reliable guide; To be smarter as a patient or consumer of health products, we will cover a lot of areas, from conspiracy theories that abound in health circles, to important concepts to understand such as risk management, causation vs. correlation, and what defines a good, reproducible, well-designed study. We will then move on to answering the very pressing questions in people’s minds today: Is there a scientifically proven diet that is considered the best? Is gluten that bad?