8 min
Biotin for Nails: What Actually Works (And What's Just Hype)
Tired of brittle nails? I'm a CNS who sees patients taking biotin wrong all the time. Here's what th...
Vitamins & Minerals
348 articlesEssential nutrients including multivitamins, vitamin D, C, B-complex, iron, zinc, and more
8 min
8 min
Vitamin B5 for Acne: What Actually Works (And What Doesn't)
Dr. Amanda Foster, MD, explains how vitamin B5 regulates sebum production for clearer skin, with evi...
8 min
Can Vitamin D Actually Calm Autoimmune Flares? An RDN's Evidence-Based Take
After 8 years of clinical practice, I review the real evidence on vitamin D for autoimmune condition...
8 min
Copper-Zinc Imbalance: Why Your Ratio Matters More Than Levels
After 15 years in clinic, I see copper-zinc imbalances constantly. Here's why the ratio matters more...
8 min
Folate vs Folic Acid: Why Your Prenatal Might Be Wrong
If you're taking folic acid with MTHFR variations, you might be wasting money. Dr. Amanda Foster exp...
9 min
Thiamine for Fatigue: Why Your Energy Crisis Might Be a B1 Problem
A 38-year-old teacher couldn't shake her exhaustion. Her labs were normal—but her mitochondria weren...
8 min
Vitamin E for Your Heart: Why the Form Matters More Than You Think
That claim about vitamin E preventing heart attacks? It's based on flawed studies using the wrong fo...
8 min
Why I Stopped Recommending Vitamin E for Everyone's Brain
I used to push vitamin E supplements for cognitive protection—until the data made me reconsider. Her...
9 min
Is Vitamin C Actually Worth It for Your Skin? An RDN's Honest Take
After 8 years of clinical practice, I'll show you what vitamin C really does for collagen production...
8 min
Iron Bisglycinate: The Gentle Iron That Actually Works Without GI Distress
Tired of iron supplements causing constipation or nausea? Iron bisglycinate offers superior absorpti...
8 min
Iodine for Breast Health: What the Research Actually Shows About Fibrocystic Changes
Is iodine the missing piece for breast tissue health? An RDN reviews modern studies on fibrocystic c...
8 min
Retinol vs Beta-Carotene: The Vitamin A Safety Debate You Need to Know
Dr. Amanda Foster, MD, breaks down the retinol vs beta-carotene debate with research, dosing specifi...