A Doctor’s Method for Knowing What Your Body Actually Needs. Dr. Earl J. Campazzi, Jr., M.D. gives you a practical framework for evaluating any supplement—before you spend another dollar on one.

Walk into any supplement aisle and the choices feel endless: vitamins for energy, capsules for longevity, powders for performance, products promising to support nearly every aspect of your health. But behind the well-advertised brands and their bold claims is the question most people forget to ask before they buy: does my body actually need this?
In The Right Supplements, Dr. Campazzi challenges the way we think about supplementation. This is not a book about building the biggest supplement routine or following the latest wellness trends. It is about learning to make smarter decisions in a world where health advice is everywhere and harder than ever to decipher.
Drawing on an extensive career in clinical science, he lays out a practical framework for evaluating any supplement: understanding why you are considering it, what evidence supports it, how it fits your individual health needs, and when it may no longer serve a purpose.
Whether you have never touched a supplement, have a cabinet full of bottles, or are still searching for answers your primary care physician hasn’t given you, this book makes the way forward clearer.
Most supplement purchases begin with a promise or a trend rather than a need. The first step is naming the actual problem you are trying to solve—and whether a supplement is the right tool for it.
What to look for on a bottle to tell whether a product has been medically tested and is backed by recognized health organizations—and which claims carry no weight at all.
Activity level, age, gender, genetics, deficiencies, allergies, medications, and prior health issues all change the answer. Generic advice is what makes supplement aisles so confusing.
Which tests and tools can actually reveal what your body is short on—and how AI can help you track nutrients and levels while still recognizing the value of medical expertise.
A supplement that made sense a year ago may serve no purpose now. Knowing when to discontinue is as important as knowing when to start.

A four-time board certified physician with more than 35 years of clinical experience, Dr. Campazzi taught residents at the Mayo Clinic before founding his Palm Beach concierge practice—the first of its kind. Long before personalized medicine became a buzzword, he was building his practice around the idea that healthcare should account for the factors that make each patient different.
A physician, educator, and author, he has spent decades translating complex medical concepts into practical guidance, challenging the idea that patients should simply follow recommendations without understanding the reasoning behind them.
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