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The Micronutrient Gap: Why Most Americans Are Falling Short (Even With a "Good" Diet)
If you think you're eating healthy enough to meet your nutrient needs, the data says otherwise for the vast majority of Americans. Multiple large-scale studies using National Health and Nutrition Examination Survey (NHANES) data reveal a startling reality: an estimated 75% to 95% of the U.S. population exhibits micronutrient inadequacies in several critical vitamins and minerals, not because of rare medical conditions, but because of the typical American diet. This isn't a fr
Laura Duffy, MS, CNS, LDN
Jul 247 min read


Why Your A|c Might Be High Even When Your Diet Is Perfect: The Sleep Apnea Connection
As a functional nutrition practitioner, one of the things I love most about this work is looking outside the box. When a client comes to me with a high A1c but eats well, exercises regularly, and manages stress reasonably well, I don't just shrug and recommend cutting more carbs. I start asking different questions. One of the most surprising and underappreciated connections I've repeatedly uncovered in clinical practice is the relationship between sleep apnea and blood sugar
Laura Duffy, MS, CNS, LDN
Jun 296 min read


Creatine Monohydrate: More Than a Gym Supplement
When most people hear "creatine," they picture bodybuilders and protein shakes. But emerging research is revealing that creatine monohydrate is far more than a performance supplement; it's a mitochondrial support tool with wide-ranging implications for metabolic health, brain function, blood sugar regulation, immunity, and healthy aging. What Is Creatine and How Does It Work? Creatine is a naturally occurring compound that the body produces every day using the amino acids arg
Laura Duffy, MS, CNS, LDN
May 217 min read


Cholesterol Reconsidered: What It Is - What It Does and Why "Lower Is Always Better" Misses the Point
If you've ever had a doctor tell you your cholesterol is "too high" and handed you a prescription on the way out, you're not alone. Cholesterol has been cast as the villain of cardiovascular health for decades. But the full story is far more nuanced and far more interesting than a single number on a lab report. What Is Cholesterol, Really? Cholesterol is a waxy, fat-like molecule called a sterol. It's so essential to human life that your body makes most of it on its own. The
Laura Duffy, MS, CNS, LDN
Apr 275 min read


GLP Medications and the Return of “Old” Deficiency Diseases: A Growing Concern
For decades, the United States has largely viewed classic nutrient deficiency diseases, like scurvy and beriberi, as relics of another era. They were conditions we associated with maritime history, extreme poverty, or severe malabsorption, not modern medical weight loss therapy. Yet recent headlines suggesting possible cases of scurvy among people taking GLP-1 medications have forced an uncomfortable question into the spotlight – are we witnessing the return of preventable nu
Laura Duffy, MS, CNS, LDN
Mar 58 min read


The New Dietary Guidelines for Americans
The New Dietary Guidelines for Americans 2025-2030: Meaningful Progress, Open Questions, and How to Put Them on Your Plate When national nutrition guidance shifts, it affects far more than headlines. The Dietary Guidelines for Americans (DGA) quietly shape what ends up on grocery store shelves, what children are served at school, what hospitals and nursing homes feed patients, and how most health professionals are trained to define “healthy eating.” They influence SNAP, WIC,
Laura Duffy, MS, CNS, LDN
Jan 2910 min read
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